373 W Wrinkle, William Lawrence The new high school in the making, the philosophy and practice of modernized secondary school [by] William L. Wrinkle, director of the Secondary school, Colorado state college of education, assisted by members of the staff of the Secondary school. New york, Cincinnati [etc] American book company [cl938] xi, 318 p. 21 cm. (Half - title: American Education series; G. D. Stryer, general editor)