Carlquist, Sherwin John, 1930-2021. [Unidentified shrub with yellow flowers Tamadaba Natural Park, Canary Islands], photograph, 1967-05-10~; (https://texashistory.unt.edu/ark:/67531/metapth1639295/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .