1970-80's Vixen Hunter Manual which measures 3-7/8" x 8-1/2" closed and opens to 11-1/2" x 12-1/4".It has instructions on rifle operation,disassembling the bolt and trigger adjustment along with an exploded view of the gun with parts numbered and a parts list.It is marked for a Sako Vixen Hunter in .223 Rem(serial number 179922) Very Good+ condition with a crease/bump at the top