A Harrington & Richardson Arms Co. manual/booklet which measures 5-1/4" x 7-1/2" with 24 numbered pages CONTENT: This booklet is marked "Copyright 1941,Harrington & Richardson Arms Co.".This is a very early(if not the first)example of the H&R Reising manual.There is no Model name attached to the gun in this manual.It measures 5-1/4" x 7-1/2" with 24 numbered pages.It tells "The Story Behind The H&R Reising Sub-Machine Gun" on 9 pages followed by instructions for using the gun.There are illustrations and line art drawings on virtually every page. Excellent condition with a small stain on the back cover and writing in pencil labeling the parts on the "exploded view" of the gun(neatly written)