Interest in individual Pony Express riders began in the late 1940s and early 1950s, when genealogists, antiquarians, and amateur and professional historians conducted research to determine such questions as who the first rider for the Pony Express was, and to list the names of individual riders. For the first rider of the Pony Express controversy see Lee Starnes, “The Pony Express Mystery,” Museum Graphic (Winter 1951). There is no single authoritative list of Pony Express riders or stationkeepers, although many have attempted to develop a comprehensive list. For an early list of riders with biographical sketches, see Kate B. Carter’s Riders of the Pony Express (1947) (reprinted in 1960 as Utah and the Pony Express). This resource is undocumented and also contains an undocumented list of stations and brief histories. Other lists of riders can be found in Raymond W. and Mary Lund Settle’s Saddles and Spurs: The Pony Express Saga (1955); Lee Jensen’s, The Pony Express: Illustrated with a Unique Collection of Historical Pictures (1955); William Harris Floyd, Phantom Riders of the Pony Express (1958); Roy S. Bloss, Pony Express—The Great Gamble (1959); Nolie Mumey’s, Hoofs to Wings: The Pony Express (1960); and Mabel Loving’s, The Pony Express Rides On! (1961), all of which place emphasis on the heroic efforts of the riders against the hardships and danger associated with their jobs.