Great improvement in grain fans : patented March 26, 1872, 002-1872, Box: 1. Millersville University Special Collections.
Great improvement in grain fans : patented March 26, 1872, 002-1872, Box: 1. Millersville University Special Collections. https://millersville.as.atlas-sys.com/repositories/2/resources/276 Accessed May 04, 2024.