Wild Bill Hickok became sheriff of Abilene, Kansas in April 1871. He left that office in early 1873 after a number of questionable shootings, including his own deputy. However, the series plays fast and loose with chronology, in everything from story lines and characters to costumes. The grave markers in Boot Hill in the opening sequences of the first three seasons, for instance, show death dates as late as 1883.
For the first time, the end credits list some cast members without character names.
Robert J. Wilkie portrays Wild Bill Hickok, but in the end credits, the name is misspelled "Hickock".