Series 1: Correspondence 1949-1976
Thomas Y. Crowell 1961-76
Houghton-Mifflin Company 1954-63
Houghton-Mifflin Company 1955-1962
MacMillan Company 1960-62
Sterling North 1952-62
W.W. Norton & Company 1949-60
W.W. Norton & Company 1961-74
Random House 1953-61
Russell & Volkening, Inc. 1949-56
Russell & Volkening, Inc. 1957-73
Research letters re Stagecoach West undated
Letters from children 1963-72
Series 2: Writings undated
American Horses
Come on Sea Biscuit
The Dry Divide
The Fields of Home
The Fields of Home
Geronimo, Wolf of the Warpath
The Home Ranch
Horse of a Different Color
Kit Carson and the Wild Frontier
Little Britches
Man of the Family
Mary Emma and Company
The Old Trails West
Riders of the Pony Express
Shaking the Nickel Bush
Shaking the Nickel Bush
Silver and Lead
Stagecoach West
Wells-Fargo
Series 3: Miscellaneous undated
Scrapbook of clippings, etc.