- "OATS AND BERMUDA GRASS ON M.F. ALLEN FARM," SEVIER COUNTY, ARKANSAS, C. 1914. Yielded 40 bales per acre. From the J.A. Wofford Collection. Copy work by Robert Walz.
- "JOE WILLMON COMBINING PLEASURE WITH FARMING" SEVIER COUNTY, ARKANSAS, C. 1914. From the J.A. Wofford Collection. Copy work by Robert Walz.
- "OATS AND BERMUDA GRASS ON M.F. ALLEN FARM," SEVIER COUNTY, ARKANSAS, C. 1914. Yielded 40 bales per acre. From the J.A. Wofford Collection. Copy work by Robert Walz.