Yellowstone National Park travel study.
By: Conducted by the Wyoming State Highway Dept., Planning and Research Division.
Contributors: United States. Bureau of Public Roads.; United States. National Park Service.
Published: 1967
Place of publication: [Cheyenne]
Language: eng
Subjects: Tourism -- Yellowstone National Park.
Notes: Prepared in cooperation with the U.S. Bureau of Public Roads and the U.S. National Park Service.