Art, Thanks for your version of Red River Shore. Max Hunter has two versions, collected in Arkansas. The one listed as 0223, sung by Lucy Quigley, is my preference of the two, because the cowboy used his Winchester to kill five and wound seven. A pistol or saber would hardly be up to the job! The broomtail in your version makes it more western and cowboy, however. Red River Shore .
According to the notes, it is related to White River Shore (In Max Hunter), New River Shore (in Brown) and to The Valiant Soldier in Randolph (from the old country).
Lomax put it in his Cowboy Songs (1938 and later eds.), in ten verses- rode a bronco here (only six verses in FSNA).