Vintage Michigan Football Wall Calendar: The 2013 Vintage Michigan Wolverines Football Calendar features archival-quality images of vintage game-day football program art from the early 1900s – 1960s. These eco-friendly calendars are printed on heavy, FSC-certified paper with soy-based inks. The large format 11x15 inch wire-bound wall calendar opens to 11x30 inches. Each month's image is perforated and easily removable to fit any standard 11x14 inch frame. ISBN: 1603686991 UPC: 724638057624