Ca.1940's Remington Model 121 Fieldmaster brochure,6-/4" x 3-1/2' closed and fully open is 12-5/8" x 7-1/16".The cover and fully open brochure are shown.The first fold when open pictures a 7-1/2" image of the rifle with features highlighted and the back cover promotes Kleanbore .22's.It lists the Model 121A & 121S.It is marked "Form No. 620 on the back cover. Excellent Condition