C. William Harrison (1913-1994) aka Chester William Harrison aka Coe Williams aka Will Hickok is purported to have written hundreds of novels and several non-fiction books under his various names. One of his books became the 1957 movie The Guns of Fort Petticoat, which he also novelised. He also wrote tie-ins for the TV series The Restless Gun.
In the aftermath of the Civil War on a Missouri riverboat, a group of bitter, fanatical southern rebels and renegades, plan an insidious scheme against the Yankees who defeated them -- joining with the Sioux and other warring, Indian tribes in a devastating strike against the North. Only one man stands against them.