Yellowstone National Park was made a National Park by the Government in 1872. There are more than 50 National Parks in the United States. National Parks do not belong to just one person, they belong to everyone in the United States. However, the largest National Park is Yellowstone. Yellowstone alone is larger than the states of: Delaware and Rhone Island, together.
Symbols of Freedom: Yellowstone National Park. M.C. Hall. 2006
"Welcome to Yellowstone" photo credit: http://www.panoramio.com/m/photo/15350378
Yellowstone Map photo credit: https://www.nps.gov/yell/planyourvisit/maps.htm
**Remaining photo credits are below.