Agricultural map of Ohio. Showing the distribution of soils, the localities of the principal productions, and the names and limits of the valleys and other natural divisions. By J.H. Klippart, Secretary of the Ohio State Board of Agriculture. 1872. (Published by Stedman, Brown & Lyon, Cincinnati. 1872. Entered ... 1872, by H.F. Walling, and O.W. Gray, and H.H. Lloyd & Co. ... Washington)