Advanced map and aerial photograph reading - USA Voorschrift, Field Manual, 21-26 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Basic photography - USA Voorschrift, Technical Manual, 1-219 Aerial photography - USA Voorschrift, Technical Manual, 1-220 Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 Enemy land mines and booby traps - USA Voorschrift,Technical Manual, 5-325 Signal Corps : Telegraph, cable and radio service - USA Voorschrift, Army Regulations, No. 105-25 Barographs ML-3-A, ML-3-B, ML-3-C, ML-3-D - USA Voorschrift, Technical Manual, 11-425 Guides to therapy for medical officers. - USA Voorschrift Technical Manual 8-210 Photographic contact printer EN-12(1) - USA Voorschrift, Technical Manual, 11-2391B Graphic Training Aid. NBC Warning and System. - USA Voorschrift Graphic Training Aid 3-6-2 Foreign Military Weapons and Equipment (U). Topographic Equipment (U). U.S.S.R. (U). - USA Voorschrift Army Pamphlet 30-20-1