[Rocks at Niagara Falls], photograph, [1965..1980]; (https://texashistory.unt.edu/ark:/67531/metapth1611119/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Rocks at Niagara Falls], photograph, [1965..1980]; (https://texashistory.unt.edu/ark:/67531/metapth1611119/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .