1991 Leupold Scope Guide,3-1/2" x 8-1/2" as shown with 11 pages which measure 7" x 8-1/2" CONTENT: It states "the single best source of information about rifle scopes in general,and Leupold scopes in particular".There is info on choosing a scope,mounting, sighting-in,parallax and the adjustable objective and more.Dated "1991" on the back cover.ALSO the originaL mailing envelope. Excellent Condition