Thompson, Jeff. E. Documents related to the case of The State of Texas vs. George McCollum, cause no. 771, 1872, legal document, 1872; (https://texashistory.unt.edu/ark:/67531/metapth104820/m1/1/: accessed October 23, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .