National parks and reserves. Regulations governing admission of automobiles into Yellowstone National Park for season of 1916, effective June 15, 1916.
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National parks and reserves. Regulations governing admission of automobiles into Yellowstone National Park for season of 1916, effective June 15, 1916.
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National parks and reserves. Regulations governing admission of automobiles into Yellowstone National Park for season of 1916, effective June 15, 1916.