National Parks Commemorative Quarters Collector's Map: Including the District of Columbia and the U.S. Territories. Denver and Philadelphia Mints. Cartography by David Lindroth. Attractive oversize tri-fold portfolio made of sturdy foam core board. In this newest collector's series, the United States mint is issuing one quarter for each state, plus the District of Columbia and the U.S. territories, to commemorate national parks and other notable sites, from national forests to national military or historical parks. The collectible quarters are being released in the order in which each site was officially established, and this portfolio accommodates all 56 from each of the two mints - 112 quarters in all! Each state is color coordinated to the year its quarter will be issued.