Remington Model 51 Dismounting and Assembling Instructions,7" x 10-3/4" with both sides shown.This is for complete Remington Model 51 disassembly.I believe this was provided to gunsmiths by Remington.I acquired a number of like sheets for different Remington guns in a Remington envelope. Very Good+ Condition with a few small stains and creases where folded to fit an envelope(all the illustrations and printing is crisp & clear)