National Parks and Monuments
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2007
...1958 1,254,306 (507,816) Lake Powell, formed by the Glen Canyon...Nome. John D. Rockefeller, Jr. PW NW Wyo. 1972 23,777...path of Spanish colonists. Lewis and Clark HT Mo., Neb., S...historic trail commemorates the Lewis and Clark expedition . Mormon...