Farm Land Development by Herbert Spencer, United States. Department of Agriculture, Harold Hall McKinney, George Stewart, John Ira Hardy, Henry Howard Finnell, Joseph Frank Pechanec, Alfred Leroy Baker, Henry Thomas Converse, Charles Edward Kellogg, C. G. Cole, George Streator Templeton, Charles Francis Bassett, Robert Kendall Enders, Arthur M. Phillips, Thora Marggraff Plitt Hardy, Bradford Knapp (Jr.), E. G. Davis, E. W. Faires, Edgar Sharp McFadden, Edwin Joseph Woolfolk, Erston Vinton Miller, Felix Scott Lagasse, Harold Thomas Lingard, Hugh Hill Wooten, J. C. Hamlin, Sarah Little Yarnall, Walker Myrick Dawson, William D. Bedard, William H. Scofield, Luther Brown, Margaret Ruth Purcell, Ralph W. Phillips, Robert Donald Davidson, Robert Ray Henley, William Carl McDuffie, Allan Joseph Ernest Suitor, Earl Beach Krantz, Frank V. Lieberman, Richard Turnbull Clark