George Catlin's Indian Gallery is an unparalleled collection of great artistic and historic significance that contributes to understanding America's frontier and the cultures of the Native Americans who lived there. George Catlin (1796-1872) was the first major artist to travel beyond the Mississippi to record what he called the "manner and customs" of American Indians, painting scenes and portraits from life. He wanted to document these native cultures before they were irrevocably altered by settlement of the frontier and the mass migrations forced by the Indian Removal Act of 1830. Between 1830 and 1836, Catlin took five trips across the Great Plains, eventually visiting fifty tribes. The nearly complete surviving set of Catlin's first Indian Gallery, painted in the 1830s, constitutes more than five hundred works.