Antiaircraft artillery : operation of matériel and employment of personnel, antiaircraft searchlight units - USA Coast Artillery Field Manual, FM 4-115 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Radio sets AN/TRT-1 and AN/TRR-2 - USA Voorschrift, Technical Manual, 11-269 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-A - USA Voorschrift, Technical Manual, 11-246A Radio set SCR-503-B (direction finding) - USA Voorschrift, Technical Manual, 11-246B Radio set SCR-556-A - USA Voorschrift, Technical Manual, 11-255 Radio set SCR-616 - USA Voorschrift, Technical Manual, 11-260 Radio set AN/VRC-1 - USA Voorschrift, Technical Manual, 11-277 Radio set AN/CRD-3 - USA Voorschrift, Technical Manual, 11-513 Radio set AN/MRC-1 - USA Voorschrift, Technical Manual, 11-602