aviation training pamphlet Flight manual : Training seaplanes Signal corps field manual : Signal corps operations Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 Agent finance officers - USA Voorschrift, Technical Manual 14-505 Browning machine gun, caliber .50, M2, water cooled, and mounts - USA Voorschrift, Technical Manual, 9-226 37-MM AA gun matériel - USA Voorschrift, Technical Manual, 9-235 radio operator - USA Voorschrift, Technical Manual, 11-454 Gunnery for seacoast artillery - USA Voorschrift, Training Manual, 2160-30 technical manual Driver's manual - USA Voorschrift, Technical Manual, 21-305 Abbreviated firing tables - USA Voorschrift, Technical Manual, 6-215 Milling machines, shapers, and planers - USA Voorschrift, Technical Manual, 1-421 Aircraft engine operation and test - USA Voorschrift, Technical Manual, 1-408