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Wallisville Heritage Park (Organization). The Age, Volume 1, Number 5, April 1, 1980, periodical, April 1, 1980; (https://texashistory.unt.edu/ark:/67531/metapth404220/m1/1/: accessed March 7, 2021), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .