Lower entrance to Poe Lock, Sault Ste. Marie, Mich.
Title from jacket. "Howard L. Shaw" on boat in foreground; "Thomas Adams" on boat in background. "G 2240" on negative. Detroit Publishing Co. no. 033737. Gift; State Historical Society of Colorado; 1949.
Canadian locks, Sault Ste. Marie, Mich. i.e. Ontario
Second title on negative: Canadian locks, Sault Ste. Marie, Ont. "WHJ 1250" on negative. Detroit Publishing Co. no. 014907. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of ship dock, harbor, free to use, no copyright restrictions image - Picryl description
![[Passengers waiting to board a freighter at the locks at Sault Sainte Marie, Michigan]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMjQvcGFzc2VuZ2Vycy13YWl0aW5nLXRvLWJvYXJkLWEtZnJlaWdodGVyLWF0LXRoZS1sb2Nrcy1hdC1zYXVsdC1zYWludGUtbWFyaWUtM2I0NDBlLTEwMjQuanBn/40/49/webp "[Passengers waiting to board a freighter at the locks at Sault Sainte Marie, Michigan]")
[Passengers waiting to board a freighter at the locks at Sault Sainte ...
Frances Benjamin Johnston Collection. Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
Freighter in Poe Lock, looking down, Sault Ste. Marie, Mich.
Title from jacket. "G 4568" on negative. Detroit Publishing Co. no. 036253. Gift; State Historical Society of Colorado; 1949.
![Str. J.T. Hutchinson [Pioneer Steamship Co.] passing Soo Locks, Dec. 11, 1903](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDMvMDEvMDEvc3RyLWp0LWh1dGNoaW5zb24tcGlvbmVlci1zdGVhbXNoaXAtY28tcGFzc2luZy1zb28tbG9ja3MtZGVjLTExLTE5MDMtMTAyNC5qcGc%3D/40/49/webp "Str. J.T. Hutchinson [Pioneer Steamship Co.] passing Soo Locks, Dec. 11, 1903")
Str. J.T. Hutchinson [Pioneer Steamship Co.] passing Soo Locks, Dec. 1...
Public domain photograph of ferry, steam boat, free to use, no copyright restrictions image - Picryl description
Old Red Locks, Billerica Massachusetts
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Str. J.T. Hutchinson Pioneer Steamship Co. passing Soo Locks, Dec. 11,...
"1548" on negative. Detroit Publishing Co. no. 021812. Gift; State Historical Society of Colorado; 1949.
The Last boat down - Public domain image. Dry plate negative.
Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of shipyard, ship dock, harbor, free to use, no copyright restrictions image - Picryl description
Str. Queen City in the locks, Sault Ste. Marie
"1540" on negative. Detroit Publishing Co. no. 021826. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of shipyard, ship docks, harbor, port, free to use, no copyright restrictions image - Picryl description
A Winter's day at the locks, Sault Ste. Marie
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Str. Muncy passing the locks, Sault Ste. Marie
"1547" on negative. Detroit Publishing Co. no. 021828. Gift; State Historical Society of Colorado; 1949.
A Winter's day at the locks, Sault Ste. Marie
"1542" on negative. Detroit Publishing Co. no. 021825. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Picryl description: Public domain image of a ship, navy, harbor, maritime photograph, 19th-20th century architecture, free to use, no copyright restrictions.
Str. David M. Whitney entering the Poe Lock, Sault Ste. Marie
"1544" on negative. Detroit Publishing Co. no. 021827. Gift; State Historical Society of Colorado; 1949.
Str. Sir William Siemens passing the locks, Sault Ste. Marie
Detroit Publishing Co. no. 021829. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of shipyard, ship dock, harbor, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of ship dock, harbor, free to use, no copyright restrictions image - Picryl description
Locking a big steamer, Sault Ste. Marie, Mich
"G 2231" on negative. Detroit Publishing Co. no. 018230. Gift; State Historical Society of Colorado; 1949.
Whalebacks locking in the Weitzel Lock
Photograph shows whalebacks in a canal lock. Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
The Locks, high and low level, Sault Ste. Marie, Mich.
Picryl description: Public domain image of a public building, auditorium, hall, commons, 19th-20th century architecture, free to use, no copyright restrictions.
The Locks, Sault Ste. Marie, Mich
Corresponding glass transparency (with same series code) available on videodisc frame 1A-30269. Detroit Publishing Co. no. 018228. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of ship dock, harbor, free to use, no copyright restrictions image - Picryl description
Whaleback Str. Pathfinder in the locks, Sault Ste. Marie, Mich
"5 Phot." on transparency. Detroit Publishing Co. no. 018231. Gift; State Historical Society of Colorado; 1949.
Whaleback Str. A.D. Thompson sic
"G 2234" on negative. Detroit Publishing Co. no. 022144. Gift; State Historical Society of Colorado; 1949.
Steamers entering and leaving Poe Locks, Sault Ste. Marie, Mich
"G 2239" on negative. "Thomas Adams" on left boat; "Marcia Duluth" on right boat. Detroit Publishing Co. no. 018232. Gift; State Historical Society of Colorado; 1949.
Old state lock 50 years ago - Public domain book illustration
Photograph showing the Old State Lock on canal. Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
The Locks, Sault Ste. Marie, Mich.
Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image of a historic view of Boston Harbor, Massachusetts, free to use, no copyright restrictions - Picryl description
Picryl description: Public domain image of a ship hull, port, harbor, ...
Picryl description: Public domain image of a ship, navy, harbor, maritime photograph, 19th-20th century architecture, free to use, no copyright restrictions.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image with Picryl description as title Public domain photograph of port, ship docks, free to use, no copyright restrictions image - Picryl description
The Locks, high and low level, Sault Ste. Marie, Mich
"G 2266" on negative. "Yosemite of Duluth" on ship at right. Detroit Publishing Co. no. 018229. Gift; State Historical Society of Colorado; 1949.
Na Saĭmenskom kanali︠e︡. Finli︠a︡ndīi︠a︡
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Canal locks, Louisville, Ky - Public domain image. Dry plate negative.
"G 3595" on negative. Detroit Publishing Co. no. 019364. Gift; State Historical Society of Colorado; 1949.
Canal locks, Louisville, Ky. - Public domain image. Dry plate negative...
Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.
Canal locks, Louisville, Ky - Public domain image. Dry plate negative.
"G 3594" on negative. Detroit Publishing Co. no. 019362. Gift; State Historical Society of Colorado; 1949.
Canal locks, Louisville, Ky. - Public domain image. Dry plate negative...
Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.
Canal locks, Louisville, Ky. - Public domain image. Dry plate negative...
Public domain photograph - historical image of Kentucky, United States, free to use, no copyright restrictions image - Picryl description
Canal locks, Louisville, Ky - Public domain image. Dry plate negative.
"G 3593" on negative. Detroit Publishing Co. no. 019363. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Picryl description: Public domain image of a ship in the sea, harbor, maritime, free to use, no copyright restrictions.
Government lock, High Bridge, Ky.
Public domain photograph - historical image of Washington State, United States, free to use, no copyright restrictions image - Picryl description
Government lock, High Bridge, Ky
"G 4252" and "8" on negative. Detroit Publishing Co. no. 019978. Gift; State Historical Society of Colorado; 1949.
High level in locks, Sault Ste. Marie, Mich
Detroit Publishing Co. no. 070580. Gift; State Historical Society of Colorado; 1949.
Entering and leaving Poe Lock, Sault Ste. Marie, Mich
"G 4581" on negative. Detroit Publishing Co. no. 070581. Gift; State Historical Society of Colorado; 1949.
The Great locks, Chicago Drainage Canal, Lockport, Ill's
"G 4807" on negative. Detroit Publishing Co. no. 071024. Gift; State Historical Society of Colorado; 1949.
Picryl description: Public domain image of a ship hull, port, harbor, ...
Public domain image of a historic view of Boston Harbor, Massachusetts, free to use, no copyright restrictions - Picryl description
High level in locks, Sault Ste. Marie, Mich.
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Poe Lock, S.S. Marie, Mich - Public domain image. Dry plate negative.
Photographer's shadow in foreground. "G 4580" on negative. Detroit Publishing Co. no. 070582. Gift; State Historical Society of Colorado; 1949.
The Great locks, Chicago Drainage Canal, Lockport, Ill's.
Picryl description: Public domain image of a historical building, landmark architecture, world heritage, free to use, no copyright restrictions.
Entering Poe Lock, Sault Ste. Marie, Mich.
Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
Poe Lock, S.S. Marie, Mich. - Public domain image. Dry plate negative.
Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.
![Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDkvMDEvMDEvZ29ua2ktbmEta2FuYWxpZS1wZXRyYS1pLWctc2hsaXNzZWxidXJnLXJvc3Npc2thaWEtaW1wZXJpaWEtMy0xMDI0LmpwZw%3D%3D/40/34/webp "Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡]")
Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡...
Public domain photograph - historical image of Russian Empire, free to use, no copyright restrictions image - Picryl description
![Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDkvMDEvMDEvZ29ua2ktbmEta2FuYWxpZS1wZXRyYS1pLWctc2hsaXNzZWxidXJnLXJvc3Npc2thaWEtaW1wZXJpaWEtMTAyNC5qcGc%3D/40/40/webp "Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡]")
Gonki na kanali︠e︡ Petra I g. Shlisselʹburg. [Rossiĭskai︠a︡ imperii︠a︡...
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
![[Lock and bridge, probably Salem, Massachusetts.]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTAvMDEvMDEvbG9jay1hbmQtYnJpZGdlLXByb2JhYmx5LXNhbGVtLW1hc3MtMTAyNC5qcGc%3D/40/51/webp "[Lock and bridge, probably Salem, Massachusetts.]")
[Lock and bridge, probably Salem, Massachusetts.]
Public domain photograph of a canal, water landscape, free to use, no copyright restrictions image - Picryl description
Ploty u beĭshlota, ozhidai︠u︡shchīe spuska
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Miraflores Locks, east chamber, Panama Canal
"Panama of New York" on steamship. Detroit Publishing Co. no. 073309. Gift; State Historical Society of Colorado; 1949.
Gatun locks, construction of gates, Panama Canal
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
Pedro Miguel Locks, east chamber, looking north, Panama Canal
"Panama of New York" on steamship. "30" on negative. Detroit Publishing Co. no. 073310. Gift; State Historical Society of Colorado; 1949.
Gatun Lock chamber, Panama Canal
Detroit Publishing Co. no. 073163. Gift; State Historical Society of Colorado; 1949.
Prokudin Gorskii: Verkhnevolzhskīĭ beĭshlot. Color separation negative
Public domain photograph - historical image of Russian Empire, free to use, no copyright restrictions image - Picryl description
Prokudin Gorskii: Verkhnevolzhskīĭ beĭshlot. Color separation negative
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
![No. [...] [P]edro Miguel Lock, Panama Canal](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTAvMDEvMDEvbm8tcGVkcm8tbWlndWVsLWxvY2stcGFuYW1hLWNhbmFsLTEwMjQuanBn/40/31/webp "No. [...] [P]edro Miguel Lock, Panama Canal")
No. [...] [P]edro Miguel Lock, Panama Canal
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
![[A concrete mixer at work at Pedro Miguel Lock site, Panama Canal]](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTEvMDkvYS1jb25jcmV0ZS1taXhlci1hdC13b3JrLWF0LXBlZHJvLW1pZ3VlbC1sb2NrLXNpdGUtcGFuYW1hLWNhbmFsLWVlNmJmZC0xMDI0LmpwZw%3D%3D/40/32/webp "[A concrete mixer at work at Pedro Miguel Lock site, Panama Canal]")
[A concrete mixer at work at Pedro Miguel Lock site, Panama Canal]
J138112 U.S. Copyright Office. Public domain photograph of quarry, mining industry, miners, free to use, no copyright restrictions image - Picryl description
Prokudin Gorskii: Verkhnevolzhskīĭ beĭshlot. Color separation negative
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Prokudin Gorskii: Verkhnevolzhskīĭ beĭshlot. Color separation negative
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Pedro Miguel Locks, Panama Canal, at Miraflores Lake
Detroit Publishing Co. no. 073167. Gift; State Historical Society of Colorado; 1949.
Gatun Dam and south lake entrance to locks
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Soo canal, 1875 - Public domain image. Dry plate negative.
Picryl description: Public domain image of a canal, barge, historic place, water reflection, 19th century, free to use, no copyright restrictions.
Pedro Miguel Locks, Panama Canal, at Miraflores Lake
Public domain photograph of Middle East, free to use, no copyright restrictions image - Picryl description
Lock and bridge, probably Salem, Massachusetts.
Title devised by cataloger. "No. 16" on negative. Detroit Publishing Co. no. 039487. Gift; State Historical Society of Colorado; 1949.
Lower locks, C & O canal, Washington, D.C.
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Lower locks, C & O canal, Washington, D.C
"G 9109" on negative. Detroit Publishing Co. no. 072862. Chesapeake & Ohio Canal. Gift; State Historical Society of Colorado; 1949.
Pedro Miguel Locks, approach from lake, Panama Canal
Picryl description: Public domain image of a ship in the sea, harbor, maritime, free to use, no copyright restrictions.
Gatun Locks, west chamber, Panama Canal
"Bolton Castle" on steamship. "20" on negative. Detroit Publishing Co. no. 073306. Gift; State Historical Society of Colorado; 1949.
Gatun Lock chamber, Panama Canal
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Gatun locks, construction of gates, Panama Canal
"20" on negative. Detroit Publishing Co. no. 073311. Gift; State Historical Society of Colorado; 1949.
![[Concrete construction at Gatun Lock site, Panama Canal]](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTEvMjMvY29uY3JldGUtY29uc3RydWN0aW9uLWF0LWdhdHVuLWxvY2stc2l0ZS1wYW5hbWEtY2FuYWwtMmRmMGM0LTEwMjQuanBn/40/32/webp "[Concrete construction at Gatun Lock site, Panama Canal]")
[Concrete construction at Gatun Lock site, Panama Canal]
J138103 U.S. Copyright Office.
Miraflores Locks, east chamber, Panama Canal
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Gatun Dam and south lake entrance to locks
"10" on negative. Detroit Publishing Co. no. 073307. Gift; State Historical Society of Colorado; 1949.
No. ... Pedro Miguel Lock, Panama Canal
"45" on negative. Detroit Publishing Co. no. 073318. Gift; State Historical Society of Colorado; 1949.
Gatun Locks, west chamber, Panama Canal
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Gatun upper locks--Looking north from east bank--March 15, 1910
No. 90-C. Public domain photograph of stereoscopic card, free to use, no copyright restrictions image - Picryl description
Soo canal, 1875 - Public domain image. Dry plate negative.
Negative cracked across center. Photograph of a photographic print. No Detroit Publishing Co. no. Gift; State Historical Society of Colorado; 1949.
Pedro Miguel Locks, approach from lake, Panama Canal
"25" on negative. Detroit Publishing Co. no. 073312. Gift; State Historical Society of Colorado; 1949.
Pedro Miguel Locks, east chamber, looking north, Panama Canal
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Looking through locks before gates were placed, Panama Canal Zone
J174035 or J174056 U.S. Copyright Office. Copyright by F.R. Roberson.
The approaches to Gatun Lock - Lithograph, public domain, Library of C...
[His Panama Canal series] Wuerth, 228. Edition of 50. Signed in reverse on stone; signed in pencil. Title and other information from Beall. American prints in the Library of Congress : a catalog of the collecti... More
Joseph Pennell - The walls of Miraflores Lock
"The only wall in March of the approach to Milaflores may be contrasted with the similar subject No. 233 - Pedro Miguel. Much as there was to be done in March, the engineer, Mr. Williamson, had no doubt it woul... More
Sergei Prokudin Gorskiy: Zabivka svaĭ i shpuntov dli︠a︡ fli︠u︡tbeta pl...
In album: Views along the Oka River and Suzdal, Russian Empire, LOT 10343, no. 757. Credit line: Prokudin-Gorskiĭ photograph collection, Library of Congress, Prints and Photographs Division. General information... More
![Zheli︠e︡zobetonnyi︠a︡ sti︠e︡nki shli︠u︡za. [Kuzminskago]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTIvMDEvMDEvemhlbGllem9iZXRvbm55aWEtc3RpZW5raS1zaGxpdXphLWt1em1pbnNrYWdvLTEwMjQuanBn/40/36/webp "Zheli︠e︡zobetonnyi︠a︡ sti︠e︡nki shli︠u︡za. [Kuzminskago]")
Zheli︠e︡zobetonnyi︠a︡ sti︠e︡nki shli︠u︡za. [Kuzminskago]
Picryl description: Public domain image of a small bridge over water, woods, historic structure, free to use, no copyright restrictions.
![Zabivka svaĭ i shpuntov dli︠a︡ fli︠u︡tbeta plotina [i.e. plotiny]. [Kuzminskago]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTIvMDEvMDEvemFiaXZrYS1zdmEtaS1zaHB1bnRvdi1kbGlhLWZsaXV0YmV0YS1wbG90aW5hLWllLXBsb3Rpbnkta3V6bWluc2thZ28tMTAyNC5qcGc%3D/40/36/webp "Zabivka svaĭ i shpuntov dli︠a︡ fli︠u︡tbeta plotina [i.e. plotiny]. [Kuzminskago]")
Zabivka svaĭ i shpuntov dli︠a︡ fli︠u︡tbeta plotina [i.e. plotiny]. [Ku...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
![Raboty po postroĭki︠e︡ shli︠u︡za. [Beloomut]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTIvMDEvMDEvcmFib3R5LXBvLXBvc3Ryb2tpZS1zaGxpdXphLWJlbG9vbXV0LTEwMjQuanBn/40/40/webp "Raboty po postroĭki︠e︡ shli︠u︡za. [Beloomut]")
Raboty po postroĭki︠e︡ shli︠u︡za. [Beloomut]
Public domain photograph - historical image of Russian Empire, free to use, no copyright restrictions image - Picryl description
Joseph Pennell - The guard gate, Gatun Lock
"There is a safety gate in each lock, to protect in case of accident, the main lock gate, just suggested, with the figures working at the armor-plate facing, on the extreme right. Beyond are the outer walls and... More
![Pletenīe zheli︠e︡zo-betonnoĭ armatury dli︠a︡ sti︠e︡nok shli︠u︡za. [Beloomut]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTIvMDEvMDEvcGxldGVuaWUtemhlbGllem8tYmV0b25uby1hcm1hdHVyeS1kbGlhLXN0aWVub2stc2hsaXV6YS1iZWxvb211dC0xMDI0LmpwZw%3D%3D/40/39/webp "Pletenīe zheli︠e︡zo-betonnoĭ armatury dli︠a︡ sti︠e︡nok shli︠u︡za. [Beloomut]")
Pletenīe zheli︠e︡zo-betonnoĭ armatury dli︠a︡ sti︠e︡nok shli︠u︡za. [Bel...
Uniformed man posed in framework of lock. Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description
![Raboty po postroĭki︠e︡ shli︠u︡za. [Kuzminskago]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTIvMDEvMDEvcmFib3R5LXBvLXBvc3Ryb2tpZS1zaGxpdXphLWt1em1pbnNrYWdvLTEwMjQuanBn/40/39/webp "Raboty po postroĭki︠e︡ shli︠u︡za. [Kuzminskago]")
Raboty po postroĭki︠e︡ shli︠u︡za. [Kuzminskago]
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Joseph Pennell - The guard gate, Gatun Lock, Panama
Picryl description: Public domain image of a construction site, works, 20th-century industrial architecture, free to use, no copyright restrictions.
Joseph Pennell - Approaches to Gatun Lock
"These huge arches, only made as arches to save concrete and to break the waves of the lake, are mightier than any Roman aqueduct, and more pictorial, yet soon they will be hidden almost to the top by the water... More
Joseph Pennell - The walls of Pedro Miguel Lock
"This was drawn from the opposite end of the lock and the greatest side walls topped with their concrete-making crenellations and cranes are seen. In the foreground, on the left, is one of the side openings for... More