Contributing Authors Include Lela Barnes, Edward Bumgardner, Thomas C. Wells, And George A. Root.

Contributing Authors Include Berlin B. Chapman, Edward R. DeZurko, And Waldo W. Braden.

Contributing Authors Include Louise Barry, Kirke Mechem, Robert Taft, And Many Others.

Contributing Authors Include George A. Root, Russell K. Hickman And Theo. H. Scheffer.

Contributing Authors Include Gladys Dodd, James C. Malin, Lela Barnes, And Louise Barry.

Contributing Authors Include Robert Taft, George A. Root, Russell Hickman, And Kirke Mechem.

Contributing Authors Include Louise Barry, James C. Malin, William B. Faherty, And Helen M. McFarland.

Contributing Authors Include Waldo R. Wedel, James C. Malin, Raymond L. Welty, Paul H. Gliddens, And Helen M. McFarland.

Contributing Authors Include Edgar Langsdorf, James C. Malin, Kirke Mechem, And Many Others.

Contributing Authors Include Martha B. Caldwell, Sheldon Jackson, Kirke Mechem, Helen M. McFarland And Many Others.

Contributing Authors Include Robert Taft, James C. Malin And Powell Moore.

Contributing Authors Include Albert Castel, Donald M. Murray, Robert M. Rodney, Louise Barry And Joseph W. Snell.

Contributing Authors Include Louise Barry And Kirke Mechem.

Contributing Authors Include Walker D. Wyman, Samuel A. Johnson, And Marvin H. Garfield.

Contributing Authors Include Clifford P. Westermeier, Alberta Pantle, Kirke Mechem, And Helen M. McFarland.

Contributing Authors Include Robert Taft, George A. Root, Russell Hickman, Kirke Mechem And Many Others.

Contributing Authors Include John Francis McDermott And Martha Caldwell.

Contributing Authors Include Esther Clark Hill, Marvin H. Garfield, George A. Root And Helen M. McFarland.

Contributing Authors Include Harold Henderson, Arch O'Bryant, Powell Moore And Helen M. McFarland.

Contributing Authors Include J. T. Willard, Dean Trickett, And Helen M. McFarland.

Contributing Authors Include Louise Barry, Russell K. Hickman, And Martha B. Caldwell.

Contributing Authors Include Robert Taft, Russell Hickman, Kirke Mechem, Helen M. McFarland, And Many Others.

Contributing Authors Include Emory Lindquist, Lorene Anderson, Alan W. Farley, Theo. H. Scheffer, And James W. Covington.