OS Ranch Steer Roping and Art Exhibit Committee. OS Ranch Steer Roping & Art Exhibit, September 29 - 30, 1973, book, 1973; (https://texashistory.unt.edu/ark:/67531/metapth556354/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .