David W. Marshall, PhD, is a historian and archivist on the faculty of Texas Tech University, with thirty four years of experience as a researcher, instructor, professor and archivist. He is the author of Mountain Man: John Colter, the Lewis and Clark Expedition, and the Call of the American West.
Keith Sellon-Wright is a seasoned professional with a career in Hollywood spanning over thirty years. He has worked with some of Hollywood's seminal directors, including Christopher Guest and Spike Lee. His television credits include Wings, Frasier, Seinfeld, The West Wing, NCIS, Mad Men, and Parks and Recreation.