Yellowstone National Park

Established on March 1, 1872, Yellowstone National Park is the oldest national park in the United States. Situated atop a giant volcanic basin, the park features awesome natural splendors--surging geysers, roaming herds of bison and elk, crystalline lakes, majestic mountains. These 20 postcards, perforated for easy removal and use, capture the park in all its glory.