U.S. rifle, cal. .30, M1 : ordnance maintenance / War Department - USA Technical Manual, TM 9-1275 Field artillery - USA Voorschrift, Training Regulations, No. 430 Ordnance maintenance u.s. rifles, cal..30 M1, M1c (sniper's) and M1d (sniper's) - USA Technical Manual, TM 9-1275 Thompson submachine gun caliber .45, M1928A1 - USA Basic Field Manual, FM 23-40 Field artillery : II - USA Voorschrift, Training Regulations, No. 430