Other References: Recreation ~ A Major Community Problem. National Recreation Association, 15¢. The Theory of Play. Mitchell and Mason, A. S. Barnes & Company, New York, $2.80. introduction to Community Recreation. Edited by George D. Butler. McGraw-Hill Book Company, Inc., New York, Just published. An authoritative reference on the field. $3.50. Handbook for Recreation Leaders. U.S. Children's Bureau. May be obtained from the Superintendent of Documents, Washington, D.C. Publication No.231, 20¢. Partners in Play. (Youth age.) National Recreation Association, $1.00. Adventures in Recreation. (Youth age.) National Recreation Association, 72¢,. Recreation publications of Federal and state Government departments and of exten- sion departments of state universities.