Presenter - William Crawley
Executive Producer for BBC NI - Deirdre Devlin, Michael Hewitt & Diarmuid Lavery
Producer - Ben O'Loan
Written and Directed by Jane Magowan
Additional archive courtesy of The Amon Carter Museum of American Art, Irvine Historical Society, Library of Congress, Montana Historical Society, New York Public Library, The Sid Richardson Art Museum, Valley Guild Steinbeck House.