[Aeonium in Era del Cardon, Canary Islands], photograph, May 16, 1967; (https://texashistory.unt.edu/ark:/67531/metapth1646045/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Aeonium in Era del Cardon, Canary Islands], photograph, May 16, 1967; (https://texashistory.unt.edu/ark:/67531/metapth1646045/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .