Casper, Michael
Biographical notes:
The Vibroplex semi-automatic telegraph key was invented by Horace G. Martin in 1905.
From the description of Michael and Cathi Casper telegraph key collection, 1858-1917. (Cornell University Library). WorldCat record id: 64054123
Links to collections
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Subjects:
- Telegraph
- Transatlantic cables
Occupations:
- Collector
Places:
not available for this record
