The Horse and the Tractor

An Economic Study of Their Use on Farms in Central Illinois

by Albert Lemuel Whiting, Cyril George Hopkins, Frank Ashmore Pearson, H. A. Ross, Harold Hanson Mitchell, Harry Alexis Harding, Harry Warren Anderson, James Lloyd Edmonds, Martin John Prucha, Robert Stewart, Samuel Wilson Parr, Walter Frederick Handschin, Wilbur Jerome Carmichael, Emil Rauchenstein, John Benjamin Rice, Thomas Everett Richmond, Warren Rippey Schoonover, William Garfield Kammlade, James Burton Andrews