Ordnance provision system. [Ordnance catalog (ordnance provision system): [Group E], Gun, 8 in., Mk. VI, Mod. 3A2 and mount, railway, gun, 8 in., M1 and M1A1, major items, maintenance parts and equipment required for maintenance of gun, 8 in., Mk. VI, Mod. 3A2 and mount, railway, gun, 8 in., M1 and M1A1, addendum, Changes 1; Sept. 12, 1942.