Superintendents of the Yellowstone National Park, August 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, November 1944
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, November 1941
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, October 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, October 1942
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, November 1959
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, January 1946
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, January 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, May 1944
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, June 1943
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, January 1942
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, March 1943
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, April 1943
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, August 1944
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, April 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, April 1944
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, September 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, May 1941
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, June 1945
Yellowstone National Park; National Park Service
Superintendents of the Yellowstone National Park, July 1942
Yellowstone National Park; National Park Service
Generously Supported By
