The following books are recommended for further study of tumbling. They were not used by the authors in the prepa­ration of this manual.

Balch, Ernest B., Amateur Circus Life. New York: The Macmillan Company, 1924.

Cotteral, Bonnie and Donnie, Tumbling, PyramidBuilding and Stunts for Girls and Women. New York: A. S. Barnes and Com­pany, 1927.

Gwathmey, James T., Tumbling for Amateurs. New York: Ameri­can Sports Publishing Company, 1922.

Harby, S. F., Tumbling for Students and Teachers. Philadelphia: W. B. Saunders Company, 1932.

McClow, L. L., and Anderson, D. N., Tumbling Illustrated. New York: A. S. Barnes and Company, 1931.

McCulloch, J. H., Gymnastics, Tumbling and Pyramids. Philadel­phia: W. B. Saunders Company, 1934.

Nomenclature Committee of the Y.M.C.A., Gymnastic Nomenclature. New York: Association Press, 1930.

Pearl, N. H., and Brown, H. E., Health by Stunts. New York: The Macmillan Company, 1919.

Wittich, W. J., and Reuter, H. C, Exercises on the Apparatus, Tumbling and Stunts. New York: A. S. Barnes and Company, 1925.

Zwarg, Leopold F., Apparatus and Tumbling Exercises. Philadel­phia : John Joseph McVey, 1926.