Service of the piece 105-mm Howitzer, M 2, truck-drawn - USA Field Artillery Field Manual, FM 6-75 Service of the piece 8-inch Howitzer M 1 - USA Field Artillery Field Manual, FM 6-91 Photomail operation - USA War Department Field Manual, FM 11-150 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Examination for gunners - USA Antiaircraft Artillery Field Manual, FM 4-119 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Assault gun section and platoon - USA Armored Force Field Manual, FM 17-25 Lastkrafwagen 1 1/2 t. Steyr Typ 640 : Sonderausrüstung für Winterbetrieb : Ausführung 1943 : Einbauanweisung, Gerätbeschreibung, Bedienungsanweisung und Ersatzteile - Duitsland Voorschrift D 669/213a Flugzeugerkennungsdienst - Duitsland Voorschrift Merkblatt 240, Folge 2/44 Enemy weapons : German infantry : heavy A A and divisional artillery - Engeland Voorschrift 26/GS Publications/897 Enemy weapons : German infantry, enigineer, and airborne weapons - Engeland Voorschrift 26/GS Publications/983 German Army in Pictures - Engeland Voorschrift MI 14