Thomas, Robert S.; Hardwick, Saunie W. & Elam, William E.Apparatus for Handling and Cleaning Seed-Cotton.,
patent,
June 16, 1891;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth172717/m1/4/:
accessed July 2, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.;
crediting UNT Libraries Government Documents Department.