Remington Model 51 Product Sheet,8" X 10" printed on both sides.I believe this was provided to gunsmiths by Remington.I acquired a number of like sheets for different Remington guns in a Remington envelope.It states on the front "Any information desired in the future as to operation,repair or refinishing of this gun may be obtained by addressing the factory at Ilion,N.Y.". Very Good+ Condition with creases where folded to fit an envelope and a 1" separation at the edge of 1 fold