Ader magneto-type hand telephone National Museum of American History

Telephone - Wikipedia

The red phone that was NOT on the Hotline

National Museum of American History

Bell hand-held magneto telephone National Museum of American History

Telephones Across the Smithsonian, Page 3

Telephones Across the Smithsonian, Page 3

File:Magneto wall telephone 1917 open.jpg - Wikipedia

Telephones hi-res stock photography and images - Alamy

First telephone exchange hi-res stock photography and images - Alamy