Awards
Western Heritage Award for Outstanding Photography Book from the National Cowboy & Western Heritage Museum (2008)
Western Writers of America Spur Award (2005)
Mountains and Plains Booksellers Award (2005, 1998)
Zia Award (2005)
Frank Waters Lifetime Achievement Award (2004)
Lee Bennett Hopkins Children's Poetry Award (1994)
National Endowment for the Arts Grant for Literature (1987)
Pulitzer Prize Nominee for musical adaptation of poetry (1976)