[1935 Income Tax Return for Boyce Ditto], Text, February 20, 1936; digital images, (http://texashistory.unt.edu/ark:/67531/metapth16333/ : accessed June 18, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Boyce Ditto Public Library, Mineral Wells, Texas.
