Tourists traveled to Yellowstone National Park on passenger trains for many years. The Union Pacific Railroad, the Northern Pacific Railway, the Chicago, Burlington & Quincy Railroad, the Milwaukee Road, and the Chicago & North Western Railway all operated trains to the park. These railroads were responsible for the development and popularity of Yellowstone National Park, America’s first national park. Yellowstone by Train, the history of this rail service, details how these railroads both competed and worked with each other to provide the tourist a memorable trip.