Specifically relating to San Francisco Maritime National Historic Park in California, this stamp is part of the group of stamps honoring the National Park Service Centennial.

Located near the Fisherman's Wharf neighborhood, San Francisco Maritime National Historical Park offers the sights, sounds, smells and stories of Pacific Coast maritime history through five National Historic Landmark vessels berthed here.

The park includes a magnificent fleet of six National Historic Landmark vessels: 1886 square-rigger Balclutha; 1890 steam ferryboat Eureka; 1891 scow schooner Alma; 1895 schooner C.A. Thayer; 1907 steam tug Hercules; and 1915 steam schooner Wapama.