Old Faithful, Yellowstone

To encourage domestic tourism and to promote America's national parks, a series of ten stamps was issued on various dates from July 16 to October 8, 1934. In denominations of 1- to 10-cents, the stamps depict scenes from the national parks in various colors.

The 5-cent blue National Parks stamp issued July 30, 1934, features an image of Old Faithful geyser in Yellowstone National Park. Yellowstone is noted for its wide variety of thermal activity — geysers, hot springs, and bubbling mud pools, and for the spectacular Upper and Lower Falls in the Grand Canyon of the Yellowstone River. The nation's first national park, Yellowstone was established in Wyoming, Idaho, and Montana in 1872.