[Gunnar Rydell with tractor in field], photograph, 194X; (https://texashistory.unt.edu/ark:/67531/metapth402880/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Gunnar Rydell with tractor in field], photograph, 194X; (https://texashistory.unt.edu/ark:/67531/metapth402880/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .