Vaughan's Seed Company. [Letter from Vaughan's Seed Company to Plantersville Nurseries, July 11, 1952], letter, July 11, 1952; (https://texashistory.unt.edu/ark:/67531/metapth1343513/m1/2/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .