POST MARK COLLECTORS CLUB - POST OFFICE PHOTOGRAPH COLLECTION

Post Office: Yellowstone National Park, WY 82190 (Park County)
Date of Photo: circa 1910-20
Contributor: Paul E. Petosky, Postmarks from the Past
Comment: (Originally established as MAMMOTH HOT SPRINGS) in (NATIONAL PARK RESERVATION, WYOMING TERRITORY) on March 2, 1880 with Clarence M. Stephen as its first postmaster. (Changed to WYOMING) on July 10, 1890. (Name changed to YELLOWSTONE PARK) on January 30, 1902 with Jennie H. Ash as postmaster. (Changed to UINTA COUNTY) by 1911. (Changed to YELLOWSTONE NATIONAL PARK COUNTY) by 1914. (Name changed to YELLOWSTONE NATIONAL PARK) on September 1, 1962 with Joseph D. Kurtz as postmaster. (Changed to NATIONAL PARK COUNTY) by 1968. (Changed to YELLOWSTONE PARK COUNTY) by 1969. (Changed to PARK COUNTY) by 1980.