[Field Service Receipt for James Edgar Sutherlin - 09/01/1950], Letter, n.d.; digital images, (http://texashistory.unt.edu/ark:/67531/metapth67173/ : accessed May 24, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Private Collection of the Sutherlin Family, Port Arthur, Texas.
