Whit Bissell (George Armstrong Custer) later became a regular in The Time Tunnel (1966) which included the Custer-themed episode Massacre (1966).
The Sioux did then, and still do, call The Little Bighorn Greasy Grass.
Jean Byron, who plays the newspaper woman Fay, became most famous as Natalie Lane, the mother of Patty Lane and aunt of Cathy, from The Patty Duke Show.