Volta Bureau building of 1893, a U.S. National Historic Landmark.
Photo taken at Volta Laboratory showing a sound recording experiment, 1884.
Volta Bureau building of 1893, in Georgetown, Washington, D.C.
Another view of the Volta Bureau building of 1893.
A Dictaphone Cylinder voice recorder, from a 1917 magazine advertisement.
A later-model Columbia Graphophone from 1901, the Precision Graphophone. Price: 110 Francs (image from a French advertisement).