Development of the Phonograph at Alexander Graham Bell's Volta Laboratory :
Newville, Leslie J.
Development of the Phonograph at Alexander Graham Bell's Volta Laboratory : Contributions from the Museum of History and Technology, United States National Museum Bulletin 218, Paper 5, (pages 69-79) [electronic resource] / Leslie J. Newville - Project Gutenberg, 2009 - Project Gutenberg 30112 .
Public domain in the USA.
Electronic text
Phonograph
Q
Development of the Phonograph at Alexander Graham Bell's Volta Laboratory : Contributions from the Museum of History and Technology, United States National Museum Bulletin 218, Paper 5, (pages 69-79) [electronic resource] / Leslie J. Newville - Project Gutenberg, 2009 - Project Gutenberg 30112 .
Public domain in the USA.
Electronic text
Phonograph
Q