Size 10 cm x 15 cm = 4x6 inches
Missing US National Parks
Denali Gates of the Arctic Glacier Bay Katmai Kenai Fjords Kobuk Valley Lake Clark Wrangell - St. Elias Petrified Forest Saguaro Arkansas - Hot Springs Death Valley Joshua Tree Kings Canyon Lassen Volcanic Redwood Sequoia Yosemite Black Canyon of the Gunnison Great Sand Dunes Mesa Verde Rocky Mountain Biscayne Dry Tortugas Everglades Haleakala Hawaii Volcanoes Mammoth Cave 7 Maine Acadia Minnesota - Voyageurs Montana - Glacier Nevada Great Basin New Mexico - Carlsbad Caverns North Carolina Great Smoky Mountains North Dakota Theodore Roosevelt Ohio Cuyahoga Valley Oregon Crater Lake South Carolina Congaree South Dakota Badlands Wind Cave Tennessee - Great Smoky Mountains Texas - Big Bend Guadalupe Mountains U.S. Virgin Islands - Virgin Islands Utah Arches Bryce Canyon Capitol Reef Zion Mount Rainier North Cascades Olympic Grand Teton