The papers of Arthur W. Farrall consist of correspondence, class materials, research materials and lectures, and have been arranged chronologically. Farrall's contribution and work with the American Society of Agricultural Engineers closes out the papers as it is the common thread that ties together the entire collection, and all of Farrall's work.

This collection consists of letters, articles, newspaper clippings, and biographical notes of Hiram Moore (1801-1875), one of the first to invent a wheat thresher.

The letters, articles, and newspaper clippings discuss the origin of the combine, which is mired in controversy, as well as its history and mechanical makeup. Also included is a letter extending Moore's patent.