Port Isabel Lighthouse State Historic Site, pamphlet, June 2015; (https://texashistory.unt.edu/ark:/67531/metapth839438/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Port Isabel Lighthouse State Historic Site, pamphlet, June 2015; (https://texashistory.unt.edu/ark:/67531/metapth839438/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .