Exhibition catalogue published in conjunction with show held November 25, 1969 - January 3, 1970 for the benefit of the Harlem Preparatory School. Includes writing by Dubuffet, George Cohen, and Claes Oldeburg. Includes the work of Jean Dubuffet, George Cohen, Claes Oldenburg, Jean Tinguely, Yves Klein, Christo, and John Van Saun. Also features a reproduced booklet of handwritten notes for one of Dubuffet's lectures. Printed in black-and-white.