Keywords: CrawfishCreek.JPG en Bridge across Crawfish Creek Yellowstone National Park 1989 Extracted From The History of the Construction of the Road System of Yellowstone National Park 1872-1966 http //www nps gov/history/history/online_books/yell_roads/hrst htm Culpin Mary Shivers 1994 National Park Service Creator Jet Lowe 1989 PD-USGov Rivers in Yellowstone National Park |