Telephone central office set TC-10 - USA Voorschrift, Technical Manual, 11-338 Converter M-222 - USA Voorschrift, Technical Manual, TM11-0344 Target Range communication systems - USA Voorschrift, Technical Manual, 11-431 Local-battery telephone equipment - USA Voorschrift, Technical Manual, 11-457 Fundamentals of telephony and manual telegraphy - USA Voorschrift, Technical Manual, 11-498 Reel units RL-26 and RL-26-A - USA Voorschrift, Technical Manual, 11-360 Wire telegraphy - USA Voorschrift, Technical Manual, 11-456 Radio set SCR-188-A - USA Voorschrift, Technical Manual, 11-233 Radio set SCR-291-A (Direction Finding) - USA Voorschrift, Technical Manual, 11-243 Aircraft instruments - USA Technical Manual, TM 1-413 Radio transmitters BC-191-A, BC-191-B, BC-191-C, BC-191-D, BC-191-E, and BC-AA-191 - USA Voorschrift, Technical Manual, 11-800 Radio set SCR-503-B (direction finding) - USA Voorschrift, Technical Manual, 11-246B
