Nancy Drew Calendar - The Secret in the Old Nancy Drew Calendar features the 26 Russell H. Tandy Nancy Drew dust jacket covers that collectors covet so much! Books 1-26 are featured. These covers are the original art covers. Calendar is a wall style calendar, spiral bound so it will lay flat but also hole punched so it can be hung. Very nice heavy weight card stock glossy paper. SIZE: 8 1/2" x 11".