United States National Museum, Smithsonian Institution, United States. Department of the Interior · Washington : Smithsonian Institution Press, [etc.]; for sale by the Supt. of Docs., U.S. Govt Print. Off. · leaf 337
Figure 53. — One of the Baudot multiplex receivers, showing the distributor commutator on top of the case. From La Lumiere electrique, 1882, vol. 6, p. 128. … Figure 54. — The Reis telephone transmitter (left) and receiver that Joseph Henry showed Alexander Graham Bell in 1875. (USNM 180173; Smithsonian bhotos 30537, 4.7876-E.) Laborde43 had already suggested in 1860 that a was energized by a current, a sound could be heard in the electromagnet.42…
Science
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