Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Letter from Alexander Graham Bell to Mabel Hubbard Bell, November 29, ...
Available text: Transcription
Clipping, February 7, 1918 - Public domain document scan
Public domain scan of newspaper clippings. Free to use, no copyright restrictions image - Picryl description.
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Letter from Alexander Graham Bell to Mabel Hubbard Bell, November 29, ...
Available text: Transcription
Clipping, February 7, 1918 - Public domain document scan
Public domain scan of newspaper clippings. Free to use, no copyright restrictions image - Picryl description.
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Letter from Alexander Graham Bell to Mabel Hubbard Bell, November 29, ...
Available text: Transcription
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Letter from Alexander Graham Bell to Mabel Hubbard Bell, November 29, ...
Available text: Transcription
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Letter from Alexander Graham Bell to Mabel Hubbard Bell, November 29, ...
Available text: Transcription
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879
Available text: Transcription
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Acoustic torpedoes
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Recognition of underwater sounds
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
Principles and applications of underwater sound
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The physics of sound in the sea
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More
The design and construction of magnetostriction transducers
Title on half-title page: Summary technical report of the National Defense Research Committee. "Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Col... More