Posts Telegraphs, Past and Present: With an Account of the Telephone and Phonograph (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from Posts Telegraphs, Past and Present: With an Account of the Telephone and Phonograph

This work would not be complete without an account of the Telephone. I have therefore placed before the reader the most recent information on this most important discovery, and also append a description of the Phonograph or Phon autograph.

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