The 1920s Yellowstone National Park Northern Pacific Railway Burlington Route Book from 1920's is a collectible piece of transportation memorabilia that showcases the history of the Northern Pacific Railway and its connection to Yellowstone National Park. This brochure serves as a glimpse into the past, offering a unique perspective on travel and tourism during that time in the United States. It is a valuable item for collectors interested in railroadiana and trains, as well as those passionate about the history of American transportation and tourism.