Siringo: The True Story of Charles A. Siringo, Texas Cowboy, ...
Ben E. Pingenot
Pierce, Ruth H., Blessing, Tex., interview with author, May 21, 198 1. Pierce, Ruth H., Blessing, Tex., to author, June 24, 1981. Potter, Colonel Jack, Clayton, N. Mex ., to Orlan Sawey, October 16, 1947. Original letter in the author's collection.