Wiley, Alvin Herbert; Lathem, Diah Walter & Lathem, Mariand Wiendfield.Churn-Operating Mechanism.,
patent,
February 14, 1911;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth510714/m1/1/:
accessed April 19, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Government Documents Department.