Scope and Contents This box contains correspondence with Otis "Dock" Marston, who went through the Grand Canyon with Nevills in 1942. On later trips, Marston served as a boatman for Nevills, and later yet became known as the historian of the Colorado River. He was always an indefatigable and voluminous correspondent, and his letters contain a great deal of information on the rivers, the canyons, and other contemporary figures. These are detailed, personal letters between him and Nevills, and contain probably the...