Gilcrease Museum, also known as the Thomas Gilcrease Institute of American History and Art, is a museum northwest of downtown Tulsa, Oklahoma housing the world's largest, most comprehensive collection of art of the American West, as well as a growing collection of art and artifacts from Central and South America. The museum is named for Thomas Gilcrease, an oil man and avid art collector, who began the collection. He deeded the collection, as well as the building and property, to the City of Tu