Ordnance provision system. [Ordnance catalog (ordnance provision system): Group C, Gun, 75-mm, M1897A1, M1897A2, M1897A3, and M1897A4, and carriage, gun, 75-mm, M2A1, M2A2, and M2A3, major items and maintenance parts required for maintenance of gun, 75-mm, M1897A1, M1897A2, M1897A3 and M1897A4, and mechanism, recoil, 75-mm, M1897A7, mechanism, recoil, 75-mm, M2A2 and M2A3, and carriaee gun, 75-mm, M2A1, carriage, gun, 75-mm, M2A2, carriage, gun, 75-mm, M2A3, addendum; Jan. 9, 1943.