. Bulletin. Science. Single-pole magneto telephone. Figure 64.—Telephones exhibited by Alexander Graham Bell at the Philadelphia Centennial Exposition of 1876. From The Bell Telephone: The Deposition of Alexander Graham Bell in the Suit Brought by the United States to Annul the Bell Patents, Boston, igo8, pp. 97-100. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 323. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the
. Bulletin. Science. Single-pole magneto telephone. Figure 64.—Telephones exhibited by Alexander Graham Bell at the Philadelphia Centennial Exposition of 1876. From The Bell Telephone: The Deposition of Alexander Graham Bell in the Suit Brought by the United States to Annul the Bell Patents, Boston, igo8, pp. 97-100. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 323. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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