Breckenridge American (Breckenridge, Tex.), Vol. 37, No. 57, Ed. 1 Thursday, March 21, 1957, newspaper, March 21, 1957; (https://texashistory.unt.edu/ark:/67531/metapth135526/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .