Training Pamphlets
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- Training Pamphlet no.1 Elementary Electricity Oct. 5, 1918
- Training Pamphlet no.2 Instructions for using the Cypher Device, Type M-94, W.D.D. no. 1097
- Training Pamphlet no.3 Elements of Cryptanalysis May, 1923. W.D.D. no.1117
- Training Pamphlet no.4 Visual Signaling Jun.2, 1918
- Training Pamphlet no.5 The Homing Pigeon, Care and Traning W.D.D. no.1000
- Training Pamphlet no.7 Primary Batteries (edition of 6-9-1922)
- Training Pamphlet no.8 Storage Batteries (formerly designated Radio Pamphlet no.8)