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478 media by topic ∙ page 1 of 5
A new map of Ayr Shire comprehending Kyle, Cunningham & Carrick : the scale one inch to a mile /

A new map of Ayr Shire comprehending Kyle, Cunningham & Carrick : the ...

Relief shown pictorially. Facsimile. Original version: [Norfolk, England? : s.n], 1775. Pyle sculp., Angel Court, Snow Hill, London. "Publish'd according to Act of Parliament, January 10th 1775." Available also... More

A Plan of the works on Spikendevil Hill with the ground in front, protracted from a scale of 200 feet to an inch.

A Plan of the works on Spikendevil Hill with the ground in front, prot...

Scale 1:2,400. Manuscript, pen-and-ink and watercolor. Has watermarks. Oriented with north to the right. Relief shown by shading. LC Maps of North America, 1750-1789, 1169 Available also through the Library of ... More

The country twenty-five miles round London : planned from a scale of one mile to an inch /

The country twenty-five miles round London : planned from a scale of o...

Relief shown by hachures. "The scale around the map is divided into statute miles east and west from the meridian of London, and north & south from the parallel of the same place, which is in Lat 51°30'." Londo... More

Every inch a sailor. Sold by J. Pitts. Great St., Andrew St

Every inch a sailor. Sold by J. Pitts. Great St., Andrew St

Public domain song - scan of American song sheet, free to use, no copyright restrictions image - Picryl description

[Ordnance Survey of England and Wales, old series, one inch to one mile map] [cartographic material].

[Ordnance Survey of England and Wales, old series, one inch to one mil...

Public domain image of the vintage map from NYPL Lionel Pincus and Princess Firyal Map Division, free to use, no copyright restrictions image. The Lionel Pincus and Princess Firyal Map Division is one of the wo... More

Joslin's six inch celestial globe from the best authorities /

Joslin's six inch celestial globe from the best authorities /

Available also through the Library of Congress Web site as a raster image. Gift; Philip Colman; Dec. 2002. Imperfect: Some cracking, spotting, and slight losses, and cracking on zodiacal circle. Paired with G31... More

Joslin's six inch terrestrial globe, containing the latest discoveries /

Joslin's six inch terrestrial globe, containing the latest discoveries...

Available also through the Library of Congress Web site as a raster image. Gift; Philip Colman; Dec. 2002. Imperfect: Some cracking from mounting at poles, and cracking on zodiacal circle. Paired with G3160 184... More

Washington Aqueduct, details of 48 inch water gate

Washington Aqueduct, details of 48 inch water gate

Drawing. Public domain photograph of French architecture design drawing, building plan, Paris, France, free to use, no copyright restrictions image - Picryl description

Washington Aqueduct, details of 48 inch water gate

Washington Aqueduct, details of 48 inch water gate

Drawing. This record contains unverified data from caption card.

Post Office extension, arrangement of 9 inch beams for skylights

Post Office extension, arrangement of 9 inch beams for skylights

Drawing. Public domain photograph of architecture design, diagram, drawing, building plan, free to use, no copyright restrictions image - Picryl description

John C. Heenan, champion of America born in West Troy, New York, May 2, 1835, height 6 ft. 1 1/2 inch, fighting weight from 180 to 185 lbs / / from photograph in attitude taken by Gillis & Johnson, 156 Broadway, New York ; lith. by Cameron & Walsh, 32 & 34 John St., N.Y.

John C. Heenan, champion of America born in West Troy, New York, May 2...

Print shows a full-length portrait of John Carmel Heenan, in boxing stance. 774 U.S. Copyright Office. Entered according to Act of Congress in the year 1860 by Wm. Carland, in the Clerk's Office of the Distri... More

8 inch barbette in battery - Public domain architectural plan drawing

8 inch barbette in battery - Public domain architectural plan drawing

Photograph of mechanical drawing showing cannon and barbette. In album: Benjamin Brown French "Photographs," p. 109. Reference copy in LOT 12251, v. 2. Original in PR 12 LOT 12251.

Siege of Yorktown, Virginia Federal Battery No. 4 mounting ten 13 inch mortars

Siege of Yorktown, Virginia Federal Battery No. 4 mounting ten 13 inch...

No. 4178. Illus. in: E468.7 .G2, Gardner's photographic sketch book of the war / Alexander Gardner. Washington, [D.C.]: Philp & Solomons, [1865-66], v. 1, no. 14. Hand written on verso: Miller, vol. V, p. 23. ... More

13 inch mortar "Dictator" in front of Petersburg, Virginia (Andrew J. Russel)

13 inch mortar "Dictator" in front of Petersburg, Virginia (Andrew J. ...

No. B269. Hand written on mount: National Archive has original neg. Information taken from record for another version of photograph in oval format, LOT 11486-C, no. 14. Forms part of: Civil War Photographs (An... More

13 inch mortar "Dictator" in front of Petersburg, Virginia

13 inch mortar "Dictator" in front of Petersburg, Virginia

Photograph shows Union officers and enlisted men standing around a large mortar on a platform on a flatbed railroad car near Petersburg, Virginia. No. 4794. Handwritten on back of mount: Gardner's photographic... More

Mystic Avenue storm drain 50 inch. At crossing with 48 inch metropoiltan water main

Mystic Avenue storm drain 50 inch. At crossing with 48 inch metropoilt...

Public domain photograph - New England history, free to use, no copyright restrictions image - Picryl description

Rand McNally & Co.'s new twelve inch terrestrial globe [gores].

Rand McNally & Co.'s new twelve inch terrestrial globe [gores].

Relief shown in hachures. Available also through the Library of Congress web site as a raster image.

[Battery No. 4 near Yorktown mounting ten 13 inch mortars each weighing 20,000 pounds. South end]

[Battery No. 4 near Yorktown mounting ten 13 inch mortars each weighin...

Photograph shows soldiers standing at cannons. Title and date from catalog record for associated negative: LC-B811-375.

U.S.S. Atlanta 6 inch gun - Public domain image. Dry plate negative.

U.S.S. Atlanta 6 inch gun - Public domain image. Dry plate negative.

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

U.S.S. Miantonomoh, mounting 10 inch guns

U.S.S. Miantonomoh, mounting 10 inch guns

Public domain photograph of American ship, free to use, no copyright restrictions image - Picryl description

U.S.S. Miantonomoh, 10 inch guns and forward turret

U.S.S. Miantonomoh, 10 inch guns and forward turret

Public domain image of an American navy warship, 19th-century ship, no copyright restrictions image - Picryl description

U.S.S. New York, breech of 8 inch gun and crew

U.S.S. New York, breech of 8 inch gun and crew

Public domain image of a American navy warship, no copyright restrictions image - Picryl description

Breech of 8 inch gun and crew - Public domain image. Dry plate negative.

Breech of 8 inch gun and crew - Public domain image. Dry plate negativ...

Picryl description: Public domain image of a navy artillery gun, cannon, ship weapon, free to use, no copyright restrictions.

U.S.S. New York, 4 inch gun and gunner

U.S.S. New York, 4 inch gun and gunner

Public domain image of a American navy warship, no copyright restrictions image - Picryl description

U.S.S. New York, 8 inch gun and crew

U.S.S. New York, 8 inch gun and crew

Public domain image of a American navy warship, no copyright restrictions image - Picryl description

U.S.S. New York, crew of forward 8 inch guns

U.S.S. New York, crew of forward 8 inch guns

Public domain photograph of American ship, free to use, no copyright restrictions image - Picryl description

U.S.S. Indian[a]; 13 inch guns, forward turret

U.S.S. Indian[a]; 13 inch guns, forward turret

Public domain image of an American navy warship, 19th-century ship, no copyright restrictions image - Picryl description

U.S.S. Massachusetts, 6 inch gun and crew

U.S.S. Massachusetts, 6 inch gun and crew

Public domain photograph of American ship, free to use, no copyright restrictions image - Picryl description

U.S.S. Massachusetts, 6 inch gun and crew

U.S.S. Massachusetts, 6 inch gun and crew

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

U.S.S. Iowa, 4 inch gun - Public domain image. Dry plate negative.

U.S.S. Iowa, 4 inch gun - Public domain image. Dry plate negative.

Public domain image of an American navy warship, 19th-century ship, no copyright restrictions image - Picryl description

U.S.S. Iowa, 4 inch gun and crew

U.S.S. Iowa, 4 inch gun and crew

Public domain image of an American navy warship, 19th-century ship, no copyright restrictions image - Picryl description

U.S.S. Iowa, 12 inch and 8 inch gun turrets

U.S.S. Iowa, 12 inch and 8 inch gun turrets

Picryl description: Public domain image of a navy artillery gun, cannon, ship weapon, free to use, no copyright restrictions.

U.S.S. Iowa, 12 inch and 8 inch gun turrets

U.S.S. Iowa, 12 inch and 8 inch gun turrets

Date based on Detroit, Catalogue J (1901). Detroit Publishing Co. no. 020438. Gift; State Historical Society of Colorado; 1949.

U.S.S. Oregon, Capt. Clark and officers and crew of after 13 inch turret, Battle of Santiago

U.S.S. Oregon, Capt. Clark and officers and crew of after 13 inch turr...

Public domain photograph of American ship, free to use, no copyright restrictions image - Picryl description

U.S.S. New Orleans, 6 inch gun - Public domain image. Dry plate negative.

U.S.S. New Orleans, 6 inch gun - Public domain image. Dry plate negati...

Picryl description: Public domain image of a navy artillery gun, cannon, ship weapon, free to use, no copyright restrictions.

U.S.S. New Orleans, 6 inch gun - Public domain image. Dry plate negative.

U.S.S. New Orleans, 6 inch gun - Public domain image. Dry plate negati...

Picryl description: Public domain image of a cannon, artillery gun, free to use, no copyright restrictions.

U.S.S. New York, breech of 8 inch gun and crew

U.S.S. New York, breech of 8 inch gun and crew

Public domain image of a American navy warship, no copyright restrictions image - Picryl description

[U.S.S. New York, breech of eight inch gun]

[U.S.S. New York, breech of eight inch gun]

Public domain image of a American navy warship, no copyright restrictions image - Picryl description

Removing nose from 6 inch shell

Removing nose from 6 inch shell

Public domain image of a group of people, ceremony, event, free to use, no copyright restrictions - Picryl description

S.J. Dixon crossing Niagara on 7/8 inch wire cable; Signor Balleni crossing Niagara on rope

S.J. Dixon crossing Niagara on 7/8 inch wire cable; Signor Balleni cro...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Steve Peere crossing Niagara on rope at the rapids; S. J. Dixon crossing Niagara on 7/8 inch wire

Steve Peere crossing Niagara on rope at the rapids; S. J. Dixon crossi...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Looking down on 10 inch gun from crow's nest, "Washington"

Looking down on 10 inch gun from crow's nest, "Washington"

Public domain photograph - Artillery gun, cannon, armed forces, military activity, free to use, no copyright restrictions image - Picryl description

Steve Peere crossing Niagara at the rapids; S.J. Dixon crossing Niagara on 7/8 inch wire

Steve Peere crossing Niagara at the rapids; S.J. Dixon crossing Niagar...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

S.J. Dixon crossing Niagara on 7/8 inch wire cable; Signor Balleni crossing Niagara

S.J. Dixon crossing Niagara on 7/8 inch wire cable; Signor Balleni cro...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

All Star Tournament, 18 Inch Balke Line, Chicago, May 7-14, 1906, Schaefer and Sutton banking for lead, Orchestra Hall

All Star Tournament, 18 Inch Balke Line, Chicago, May 7-14, 1906, Scha...

H77599 U.S. Copyright Office Copyright claimant's address: Chicago. Copyright deposit; Geo. R. Lawrence Co.; May 16, 1906.

[Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling newspapers 5 years. Average earnings 35 cents a week. Sells from choice. Father, rivet driver, $20 weekly. "Happy" is well known character in town. When first interviewed gave story of sleeping in broken buildings and lots at night. Found out in streets at 11 P.M. at night pitching pennies and working "last paper" scheme. Flips cars and has sister who is 8 years of age who begs and sells papers. Boy very imaginative, and when last seen had a rusty 5 inch knife which he said he found and was playing with same in gutter. Edward F. Brown, Investigator. Wilmington, Del. May, 1910.] Location: Wilmington, Delaware / Photo by Lewis W. Hine.

[Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling n...

Picryl description: Public domain portrait of a child, free to use, no copyright restrictions image.

[Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling newspapers 5 years. Average earnings 35 cents a week. Sells from choice. Father, rivet driver, $20 weekly. "Happy" is well known character in town. When first interviewed gave story of sleeping in broken buildings and lots at night. Found out in streets at 11 P.M. at night pitching pennies and working "last paper" scheme. Flips cars and has sister who is 8 years of age who begs and sells papers. Boy very imaginative, and when last seen had a rusty 5 inch knife which he said he found and was playing with same in gutter. Edward F. Brown, Investigator. Wilmington, Del. May, 1910.] Location: Wilmington, Delaware / Photo by Lewis W. Hine.

[Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling n...

Public domain scan of portrait art print, free to use, no copyright restrictions image - Picryl description

16 - inch gun, Watervliet - Glass negative photogrpah. Public domain.

16 - inch gun, Watervliet - Glass negative photogrpah. Public domain.

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

5 inch gun - Glass negative photogrpah. Public domain.

5 inch gun - Glass negative photogrpah. Public domain.

Picryl description: Public domain image of a navy artillery gun, cannon, ship weapon, free to use, no copyright restrictions.

Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling newspapers 5 years. Average earnings 35 cents a week. Sells from choice. Father, rivet driver, $20 weekly. "Happy" is well known character in town. When first interviewed gave story of sleeping in broken buildings and lots at night. Found out in streets at 11 P.M. at night pitching pennies and working "last paper" scheme. Flips cars and has sister who is 8 years of age who begs and sells papers. Boy very imaginative, and when last seen had a rusty 5 inch knife which he said he found and was playing with same in gutter. Edward F. Brown, Investigator. Wilmington, Del. May, 1910. Location: Wilmington, Delaware / Photo by Lewis W. Hine.

Donald Mallick, ("Happy"), 203 King Street. 9 years of age, selling ne...

Picryl description: Public domain image of child labor, exploitation, children workers, economic conditions, free to use, no copyright restrictions.

Box culvert--Details of extension of 2 foot 6 inch by 2 foot 6 inch sta. 717 and 34.7--South Orange, NJ [1914.07.11] Sheet no. 1 of 1

Box culvert--Details of extension of 2 foot 6 inch by 2 foot 6 inch s...

Public domain scan of technical drawing, free to use, no copyright restrictions image - Picryl description

Infrared Photo of Denali From 60,000'

Infrared Photo of Denali From 60,000'

From the photographer, Charles Anderson: "I took this photo of Mt McKinley (Denali) in July of 1977. The pilot, Roger Zweig, and I were at 60,000 feet in the NASA WB57F aircraft. The cameras were vertical looki... More

Tassels, Step 7-2 - Public Domain image, National Parks Gallery

Tassels, Step 7-2 - Public Domain image, National Parks Gallery

Cut a 10-inch piece of string. You can match the color to your tassel or use a contrasting color. Tie the string around the tassel, ½ inch down from the top. Wrap the string around the tassel 8 to 10 times, the... More

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROUND

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROU...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. BORING BREECH OF 14 INCH GUN

NAVY YARD, U.S., WASHINGTON. BORING BREECH OF 14 INCH GUN

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINKING JACKET ON IT

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINK...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINKING JACKET ON IT

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINK...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 50 CAL. GUN

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 5...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 50 CAL. GUN

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 5...

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 50 CAL. GUN

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 5...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROUND

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROU...

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINKING JACKET ON IT

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINK...

Public domain historic photograph of Washington DC, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 50 CAL. GUN

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 5...

Picryl description: Public domain image of an artillery gun, cannon, weapon, free to use, no copyright restrictions.

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 50 CAL. GUN

NAVY YARD, U.S., WASHINGTON. TURNING, EXAMINING AND BORING A 5 INCH, 5...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. BORING BREECH OF 14 INCH GUN

NAVY YARD, U.S., WASHINGTON. BORING BREECH OF 14 INCH GUN

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROUND

NAVY YARD, U.S., WASHINGTON. 14 INCH GUNS, READY TO GO TO PROVING GROU...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINKING JACKET ON IT

NAVY YARD, U.S., WASHINGTON. 14 INCH GUN; VARIOUS OPERATIONS IN SHRINK...

Public domain photograph of industrial building, factory, free to use, no copyright restrictions image - Picryl description

Coal barges and the passers whose bodies are as black as night with coal dust Malta presents a white stone hill of buildings and forts with not an inch of shade from the hot eastern sun.

Coal barges and the passers whose bodies are as black as night with c...

Photographs show laborers on a coal barge with baskets, and a view of the coastline of Malta. On page: no. 1509 (top image) and no. 1510 (bottom image). In album: European pictures (1923 trip), p. [134]. Negat... More

Prof. Hall of Naval Observatory with 26 inch telescope, [Washington, D.C.], 8/18/24

Prof. Hall of Naval Observatory with 26 inch telescope, [Washington, D...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Prof. Hall of Naval Observatory with 26 inch telescope, [Washington, D.C.], 8/18/24

Prof. Hall of Naval Observatory with 26 inch telescope, [Washington, D...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

Full Scale Tunnel (FST) and Seaplane Tow Channel

Full Scale Tunnel (FST) and Seaplane Tow Channel

Description (August 15, 1930) Installation of Careystone covering at the Full-Scale Tunnel (FST) facility. The corrugated concrete and asbestos panels (1/4 inch thick; 42 inches wide; 62 inches long) which were... More

Full Scale Tunnel (FST) and Seaplane Tow Channel [Exterior]

Full Scale Tunnel (FST) and Seaplane Tow Channel [Exterior]

Description (August 15, 1930) Installation of Careystone covering at the Full-Scale Tunnel (FST) facility. The corrugated concrete and asbestos panels (1/4 inch thick; 42 inches wide; 62 inches long) which were... More

Studies little mollusca. Dr. Paul Bartsch of the National Museum studies mollusk specimens from the Mississippi river in connection with experiments being conducted by the Bureau of Fisheries. These shellfish are little fellows in their infancy. One of the tubes held by Dr. Bartsch holds 1,265,920 specimens, taking up three-fourths of a cubic inch of space, while the other contains 568,000 specimens. 12/22/30

Studies little mollusca. Dr. Paul Bartsch of the National Museum studi...

A black and white photo of a man sitting at a bar. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Employee housing. Interior typical of houses at Norris. Floor is of third-grade tongue-and-groove oak which is produced locally. Walls are 7/8 inch tongue-and-groove pine to the window sill level and large sheets of quarter- inch thick fir plywood above. Ceilings are of insulating board. Windows are steel with aluminum screens. Houses are electrically heated; hot water and heating equipment are likewise electrical

Employee housing. Interior typical of houses at Norris. Floor is of th...

Public domain photograph of living room, free to use, no copyright restrictions image - Picryl description

Visitors' buildings. Another view of one of twin overlook buildings shown on K 1986. Structures are lightweight because they were placed on a relatively recent fill. Walls and partitions are of three inch by three inch studs, steel were exposed and wood otherwise, covered by asbestos panels on a modular spacing. Window, door, and solid panels are interchangeable

Visitors' buildings. Another view of one of twin overlook buildings sh...

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Scotch machine, Washington, D.C., September 8. This machine, exhibited at the World Power Conference which is being held here, is devised so as to use every inch of matter contained in coal. The coal is put in the rettort and heated to a temperature of 1832 degrees. From the smoke and gas, Tar, Ammonium Sulphite, sulphur, light oils and gas are derived and from the tar, medicines, aromatic oils, perfumes, dyes, and acids are derived. From the light oils, motor fuel is obtained. In short: this machine wastes nothing at all

Scotch machine, Washington, D.C., September 8. This machine, exhibited...

Public domain photograph of Washington DC, free to use, no copyright restrictions image - Picryl description

Scotch machine, Washington, D.C., September 8. This machine, exhibited at the World Power Conference which is being held here, is devised so as to use every inch of matter contained in coal. The coal is put in the retort and heated to a temperature of 1832 degrees. From the smoke and gas, Tar, Ammonium Sulphite, sulphur, light oils and gas are derived and from the tar, medicines, aromatic oils, perfumes, dyes, and acids are derived. From the light oils, motor fuel is obtained. In short: this machine wastes nothing at all

Scotch machine, Washington, D.C., September 8. This machine, exhibited...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

William Browner, Ast. Astronomer at the Naval Obs. looking thru 25 inch reflectuary teles.

William Browner, Ast. Astronomer at the Naval Obs. looking thru 25 inc...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Flame propogation in gas engines photographed. Washington, D.C., Aug. 26. A study of the mechanism of the flame propogation in the cylinder of a internal combustion engine is being made at the U.S. Bureau of Standards for the National Advisory Committee for Aeronautics. A secial bomb made of steel, shown in the foreground, and designed to withstand pressures up to 500 lbs. to the square inch is used to show the progress of the flame and the rise in pressure which may be recorded photographically during the gas explosions under carefully controlled conditions. The camera, where the recordings are made, is in front of Dr. Ernest F. Flock of the Bureau of Standards, carries its film on a drum which may be revolved up to 4,000 revolutions per minute, this camera also records a neon light flashing at a thousandth of a second. The independent effects of pressure, temperature and charge composition upon flame speed and explosion ratio may be made with this equipment, 8/26/37

Flame propogation in gas engines photographed. Washington, D.C., Aug. ...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 5/28/37

Interferometer tests standard gages for automobile manufacturers. Wash...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 52837

Interferometer tests standard gages for automobile manufacturers. Wash...

A man in a tie is looking through a microscope, Library of Congress Harris and Ewing collection Title from unverified caption data received with the Harris & Ewing Collection. Gift; Harris & Ewing, Inc. 1955. ... More

A red "hotbed" in Brooklyn College. Washington, D.C., Aug. 23. Congressional investigators heard testimony today that Brooklyn College, N.Y. "might quite fairly be labeled a hotbed of propaganda" and communist activity. Prof. Edward I. Fenlon of the College's Department of Philosophy made the assertion in testimony before the House Committee investigating Un-American activities. He testified that professors and students were "deluged" with communist propaganda. Which at times lettered the sidewalks in places a half inch thick, 8/23/38

A red "hotbed" in Brooklyn College. Washington, D.C., Aug. 23. Congres...

A black and white photo of a man sitting at a table. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Initiative needed here. Washington, D.C., June 3. Initiative was certainly needed when Clarence Jackson, diminutive news photographer, was sent to get a closeup of policeman Edward F. Brown, 6 foot, 91/2 inch arm of the law who gaurds the entrance to the Senate cloakroom at the Capitol. Jackson got the picture even though he had to resort to a desk to get on speaking terms with the huge policeman, 6/3/38

Initiative needed here. Washington, D.C., June 3. Initiative was certa...

A man standing next to a man in a suit. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Sampling cotton at compress for length of staple and grade. These expert samplers can tell merely by looking at the staple what its length is within one sixteenth of an inch. Compress, Houston, Texas

Sampling cotton at compress for length of staple and grade. These expe...

Public domain photograph of the United States military and military-industrial complex before World War Two, 1930s, free to use, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. This slab of stainless steel is being rolled by a three-high 100 inch plate mill to bring it to the proper length, finish, thickness and width. It will eventually be used as tank armor

Steel manufacture, Allegheny-Ludlum. This slab of stainless steel is b...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. Here is one of the huge seventy-two inch mills used to produce smooth, bright cold-rolled finish on steel sheets. The two highly polished center rolls are reinforced by heavier rollers to assure uniform reduction in the thickness of the sheet. These mills are used in the production of high quality steel

Steel manufacture, Allegheny-Ludlum. Here is one of the huge seventy-t...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Chrysler tank arsenal. This is one of the huge machine tools used in production of the M-3 tanks, the twenty-eight ton monsters built at the Chrysler tank arsenal in Detroit. This press works with a power of 450 tons, stamping out quarter inch steel floor plates

Chrysler tank arsenal. This is one of the huge machine tools used in p...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Down the production line, one after another, come the sturdy, rugged rear axles of Dodge Army trucks in the steady, smooth flowing assembly process. The axles are of the full floating type and are equipped with 14 1/8 inch brake assemblies

Down the production line, one after another, come the sturdy, rugged r...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

War ration book no. 3. This new ration book, replacement for present books when their stamps are used up, will be distributed during the early summer. It contains four pages of "point" stamps, similar to the point stamps in war ration book 2, though slightly different in design and printed in brown ink. It also contains four pages of "unit" stamps for the type of rationing now used for sugar, coffee, and shoes. Each page of fourty-eight stamps bears the design of a different war machine, including guns, tanks, aircraft carriers and planes. One of each of these stamps is reproduced separately below the picture of the book. Important note: Actual dimensions of the point ration stamps are 7/8 inch x 1 inch, while the unit stamps are 7/16 inch x 1 inch. The U.S. Secret Service requests that ration stamps not be reproduced in actual size, but less than 3/4 or over 1 1/2 times. Also, stamps should not be reproduced in color. This photograph, if reproduced, same size, meets these requirements

War ration book no. 3. This new ration book, replacement for present b...

Picryl description: Public domain historical photo of Second World War, free to use, no copyright restrictions image.

Steel manufacture, Allegheny-Ludlum. A slab of stainless is about to enter a three-high 110 inch plate mill, just having been removed from a heating furnace. This mill will roll the slab to produce the finish, thickness, width and length required for its use as tank armor

Steel manufacture, Allegheny-Ludlum. A slab of stainless is about to e...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

One year of reciprocal aid. Practically everything needed by our forces in Britain is supplied by the British government under reciprocal lend-lease. American soldiers here use British made guns and ammunition in training to defend U.S. bomber- fighter and aircraft repair bases in Great Britain. They are shown here firing British 3.7 inch anti-aircraft guns in Britain

One year of reciprocal aid. Practically everything needed by our force...

Picryl description: Public domain image of the British Empire armed forces, 19th-20th century war and military conflict, free to use, no copyright restrictions.

Chrysler tank arsenal. This is one of the huge machine tools used in production of the M-3 tanks, the twenty-eight ton monsters built at the Chrysler tank arsenal in Detroit. This press works with a power of 450 tons, stamping out quarter inch steel floor plates

Chrysler tank arsenal. This is one of the huge machine tools used in p...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. This slab of stainless steel is being rolled by a three-high 100 inch plate mill to bring it to the proper length, finish, thickness and width

Steel manufacture, Allegheny-Ludlum. This slab of stainless steel is b...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

U.S. Negro troops on way to Liberia. The Naval armed guard on a Liberia bound transport stages a gun drill with a 4 inch deck gun and a heavy anti-aircraft machine gun. The Negro troops, members of a highly trained engineer unit of the U.S. Army, made the trip to Africa without incident

U.S. Negro troops on way to Liberia. The Naval armed guard on a Liberi...

Picryl description: Public domain photograph of a ship, docks, navy, free to use, no copyright restrictions.

Assembling a joint of screen door. Screen door stock used is one inch by four inches. Joints are cut square and held together with corrugated fasteners. Screening demonstration. Saint Mary's County, Ridge, Maryland

Assembling a joint of screen door. Screen door stock used is one inch ...

Picryl description: Public domain photograph of a worker, construction, carpenter, 1930s, free to use, no copyright restrictions.

Army uniform trouser manufacture. Kane Manufacturing Company, Louisville, Kentucky. Cotton khaki and wool serge trousers are turned out here at the rate of 1300 a day to the designs and rigid specifications of the Army Quartermaster Corps. 34 sizes ranging from a small 28 inch waist with 29-inch leg to large size with a 46-inch waist and 33-inch leg. Here Frank Ernwine lays out patterns. He has been at his trade for forty-five years and helped make Army uniforms in World War I

Army uniform trouser manufacture. Kane Manufacturing Company, Louisvil...

Picryl description: Public domain historical photo of Second World War, free to use, no copyright restrictions image.

Barrage balloon manufacture. Spider and the flies. Putting last touches on a completed barrage balloon are these workers and their supervisor (standing). To inspect the bag for leaks, the light inside is turned off, leaving the workers in a midnight gloom. Then a co-worker on the outside takes a bright light, and works along the length of the entire balloon, back and forth, until he has covered every inch. The tiniest pinhole shines forth like a bright star in the sky, and these alert inspectors spot it and repair it. Cloth moccasins are worn inside the bag, or else stocking feet--to avoid chafing the fabric. General Tire and Rubber Company, Akron, Ohio

Barrage balloon manufacture. Spider and the flies. Putting last touche...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Hollow steel sucker rod placed in two inch casing. Ridge well project, Saint Mary's County, Maryland

Hollow steel sucker rod placed in two inch casing. Ridge well project,...

Public domain photograph - historical image of Maryland, United States, free to use, no copyright restrictions image - Picryl description

Flyweight calling for four inch capacity semi-automatic turret lathe, internal thread grinder, internal grinder, cylindrical grinder, and lapping and heat treating facilities

Flyweight calling for four inch capacity semi-automatic turret lathe, ...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Civilian protection. Every square inch of the body must be well protected by impermeable or impregnated clothing to enable the decontamination worker to closely approach liquid vesicant gas. Later, the clothing must be carefully removed by a helper himself dressed in gas-proof clothing and decontaminated

Civilian protection. Every square inch of the body must be well protec...

Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description

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