Gun Notches: The Life Story Of A Cowboy-Soldier by Capt. Thomas H. Rynning, first edition with dust jacket, published 1931; image credit on full record.
Rynning, Captain Thomas H. (As told to Al Cohn and Joe Chisholm). Gun Notches: The Life Story Of A Cowboy-Soldier. New York: Frederick A... [more detail available via subscription]