Yellowstone National Park's nearly 3,500 square miles seep slightly across state borders into Montana and Idaho, but its major attractions are contained in the northwest corner of Wyoming.

1997 21COM VIIB.23/17 - SOC: Yellowstone National Park (United States of America) 1997 21BUR IVA.12 - Yellowstone National Park (United States of America) 1996 20COM VIIC.21/18 - SOC: Yellowstone ...