Contributing Authors Include Kenneth Wiggins Porter, Robert W. Johannsen, James C. Malin And Alberta Pantle.

Contributing Authors Include Alan W. Farley, David Lindsey, Theo. H. Scheffer, James C. Malin And Eugene T. Wells.

Contributing Authors Include Alberta Pantle, F. D. Farrell And Frank F. Eckdall.

Contributing Authors Include Alberta Pantle, F. D. Farrell, Frank F. Eckdall And Many Others.

Contributing Authors Include Hamilton Gardner, Mrs. Raymond Millbrook, And Alberta Pantle.