Wilson, James Grant, et al. "John Deere." The Cyclopaedia of American Biography. New enl. ed. of Appleton's cyclopaedia of American biography. 1918. Description: Portrait of John Deere. Source: The Cyclopaedia of American Biography. Permission: PD-Us. Accessed from https://archive.org/stream/cyclopaediaofame08wilsuoft#page/68/mode/2up.