Electric Toy Making for Amateurs: Including Batteries, Magnets, Motors, Bells, Miscellaneous Toys, Dynamo Construction, Telegraph Key, Sounder, Microphone, Telephone Receiver, Etc. Etc.
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Morse Telegraph Sounder: Fast Speeding Trains
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Canadian Railway Telegraph History
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Electric toy making for amateurs: Including batteries, magnets, motors, bells, miscellaneous toys, dynamo construction, telegraph key, sounder, ... receiver, etc. etc (An electrical library)