Original issue, US Army Technical Manual, 454 pages, size is 6 1/4" x 9 1/4", loose leaf, three hole punched, dated 25 September 1990. This is not a commercial copy or print but an original manual published in 1990 and republished in 1994 to include changes 1 through 3.. Title of publication is - TM 9-2350-264-10-1, Operator Manual, Operator Controls, PMCS, and Operation Under Usual Conditions, Volume1 of 2, for Tank, Combat, Full-Tracked: 120 MM Gun, M1A1, General Abrams. Publication is designed to provide information and instructions for the operation of this tank under usual conditions. Very well illustrated using extremely clear and detailed line drawings.