Display your National Park Quarter collection in this educational Collector Chart. Special "push-fit" foam makes it easy to insert your coins, openings for all 56 National Park Quarters. Big 13.2" x 39.75" Foam construction is inert and safe for your coins. The National Park Quarters Coin Act of 2008 - Requires quarters, beginning in 2010, to have designs on the reverse depicting one national site in each state, the District of Columbia and territory of the United States.