When and why did the idea of national parks emerge in American history? Several creation myths, or “campfire tales” as Diamant and Carr call them, have been embraced by historians and government officials. Among them are the discussion around the campfire at Madison Junction on the Yellowstone Plateau during the 1870 Washburn-Langford-Doane expedition broaching the idea, which was then promoted by Langford on behalf of the Northern Pacific Railroad and resulted in the creation of Yellowstone as the world’s first national park.