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| View Original: | Telegraph key, Vibroplex, Horace G. Martin - National Electronics Museum - DSC00221.JPG (4817x2179) | |||
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| Keywords: Telegraph key, Vibroplex, Horace G. Martin - National Electronics Museum - DSC00221.JPG en Exhibit in the National Electronics Museum 1745 West Nursery Road Linthicum Maryland USA All items in this museum are unclassified The museum permitted photography without restriction 2014-07-21 14 50 44 own Daderot cc-zero Uploaded with UploadWizard Telegraph keys in the National Electronics Museum Vibroplex | ||||
