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- J. H. Bunnell Galvanometer, circa 1893 -

- circa 1893
- Collections - Artifact
J. H. Bunnell Galvanometer, circa 1893
- J. H. Bunnell Wheatstone Relay, Model 1A, 1890-1900 -

- 1890-1900
- Collections - Artifact
J. H. Bunnell Wheatstone Relay, Model 1A, 1890-1900
- Telegraph Key Used by Theodore Haubner to Send One of the First "SOS" Distress Signal on August 11, 1909 - In 1909, telegraph operator Theodore Haubner sent the first American ship-to-shore wireless distress signal -- SOS -- using this telegraph key. Haubner was aboard the SS <em>Arapahoe</em> off Cape Hatteras, North Carolina, when it became disabled.

- August 11, 1909
- Collections - Artifact
Telegraph Key Used by Theodore Haubner to Send One of the First "SOS" Distress Signal on August 11, 1909
In 1909, telegraph operator Theodore Haubner sent the first American ship-to-shore wireless distress signal -- SOS -- using this telegraph key. Haubner was aboard the SS Arapahoe off Cape Hatteras, North Carolina, when it became disabled.
- Telegraph Key and Sounder, 1886 -

- 1886
- Collections - Artifact
Telegraph Key and Sounder, 1886
- Bunnell Telegraph Resistance Box, circa 1885 -

- circa 1885
- Collections - Artifact
Bunnell Telegraph Resistance Box, circa 1885
- Bunnell Polarized Telegraph Relay, 1890-1900 -

- 1890-1900
- Collections - Artifact
Bunnell Polarized Telegraph Relay, 1890-1900
- J.H. Bunnell Telegraph Sounder, Used at Ford Motor Company -

- circa 1905
- Collections - Artifact
J.H. Bunnell Telegraph Sounder, Used at Ford Motor Company
- Telegraph Relay, circa 1865 -

- circa 1865
- Collections - Artifact
Telegraph Relay, circa 1865
- J. H. Bunnell Galvanometer, circa 1893 -

- circa 1893
- Collections - Artifact
J. H. Bunnell Galvanometer, circa 1893
- J. H. Bunnell & Company Telegraph Switchboard, Used with the Edison & Kenny Facsimile Telegraph, 1878-1884 -

- 1878-1884
- Collections - Artifact
J. H. Bunnell & Company Telegraph Switchboard, Used with the Edison & Kenny Facsimile Telegraph, 1878-1884