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On March 1, 1872, General Ulysses S. Grant signed legislation establishing Yellowstone as the world's first national park, and the nation celebrated the park's centennial in 1972. This centennial celebration included the issuance of the following seven commemorative stamps by the United States Postal Service in 1972:
2-cent Cape Hatteras National Seashore (four stamps)
6-cent Wolf Trap Farm Park
8-cent Old Faithful
15-cent Mount McKinley
Glossary