Galveston Philatelic Society. Stamp-Itis, Volume 1, Number 12, November 1923, periodical, November 7, 1923; (https://texashistory.unt.edu/ark:/67531/metapth1129263/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .