Casper, Michael
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
Archival Resources
| Role | Title | Holding Repository | |
|---|---|---|---|
| creatorOf | Casper, Michael,. Michael and Cathi Casper telegraph key collection, 1858-1917. | Cornell University Library |
Bibliographic and Digital Archival Resources
| Role | Title | Holding Repository |
|---|
Filters:
| Relation | Name | |
|---|---|---|
| associatedWith | Atlantic Telegraph Company (Limited) | corporateBody |
| associatedWith | Field, Cyrus W. (Cyrus West), 1819-1892. | person |
| associatedWith | Vibroplex Company. | corporateBody |
| Place Name | Admin Code | Country |
|---|
| Subject |
|---|
| Telegraph |
| Transatlantic cables |
| Occupation |
|---|
| Collector |
| Activity |
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Person
Active 1858
Active 1917
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