5.25x7" vertical format mock-up activity book c. late 1940s-1950. Both outer covers are 100% original art w/front cover image of Hopalong Cassidy on Topper although Hoppy name has been overlaid by "Roy Rogers" painted name. Back cover pictures Hoppy again although "Roy Rogers" name is an added redesignation for "Bar-29 Ranch" sign. Inside front cover is hand-colored photostat "Foreword" mock-up introduction. Book totals 48 pages of b/w glossy photostats applied back-to-back based on original art for numerous games, comics, puzzles, riddles, western lore coloring pages. Outer covers have light dust soiling and front has a few additional design markings in pencil. Gold stated that this was “conceived for the General Foods Post Cereal Division”. Overall Fine. See next item for a Hopalong Cassidy version. This item is a file copy from the Gold archives and is accompanied by a letter to that effect signed by Gordon Gold.