U.S. Coast and Geodetic Survey. Coast chart no. 211 : Padre I. and Laguna Madre Lat. 27 [degrees] 33 ́ to Lat. 26 [degrees] 33 ́, Texas., map, 1890; (https://texashistory.unt.edu/ark:/67531/metapth220351/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .