United States. Bureau of the Census. 2000 Census County Subdivison Block Map: Seymour Rural CCD, Texas, Block 1, map, 2000; (https://texashistory.unt.edu/ark:/67531/metapth417677/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .