No author available
· 1941
Albert Watts Moore, Birely J. Landis, C. C. Hill, Charles Stewart Bisson, Edmund Ellsworth Vial, Edwin Richard Kalmbach, Frederick Lovejoy Wellman, Frederick Strauss, Harry Vaughn Harlan, Homer Charles McNamara, Homer LeRoy Shantz, Kenneth Thurman Williams, Lela Evangeline Booher, Loren LeRoy Davis, Paul Ransom Henson, R. R. Graves, Ralph Hoagland, Raymond Leslie Spangler, Rutillus Harrison Allen, Theodore Comstock Scheffer, Theodore Thomas Ayers, Victor Rickman Boswell, William Henry Black, William John Reid, C. L. Lefebvre, Dalton Ray Hooton, Erling Hole, Eva Ruth Hartzler, George Gordon Snider, George Haymaker Vansell, Harvey Leroy Westover, Hubert William Lakin, Jenkin William Jones, John Stuart Pinckney, Louis Hyman Bean, Mary L. Martini, Neale F. Howard, R. L. Piemeisel, Ralph Melvin Lindgren, Robert Claude Wright, Dow Dewey Porter, Harland Stevens, Horace Greeley Byers, Howard Wilfred Johnson, Ronald Lester Mighell, Walter Brown Dye, Walter M. Peacock · 1939
Arnold Ernest Lundie, B. T. Galloway, Benjamin Robert Leach, C. C. Hill, C. J. Babcock, Claude Dennison Kinsman, David Griffiths, Edward William Nelson, Frank Getz Ashbrook, George Leslie Bidwell, Harold Arthur Whittaker, Harold Hall McKinney, Harry Slaughter Garrison, Harry Vaughn Harlan, Harvey W. Hawthorne, James Isaac Hambleton, John Morgan Stephens, Lyman Crane Burnett, Paul Frothingham Nichols, Samuel Fortier, Smith Winford Greene, Willis James Nolan, Arthur Truman Semple, Elmer Ottis Wooton, Ernest Pillsbury Walker, Frederick David Richey, John Peter Johnson, Mary L. Martini, Thomas Ray Stanton, Clyde William Warburton, Merritt Nichol Pope · 1925
And conclusions. pp. 23.