Between Object and Environment: Sculpture in an Extended Format.

(Philadelphia, PA): Institute of Contemporary Art, University of Pennsylvania, 1969.  First edition. Oblong 12mo. Unpaginated.  Catalogue for the exhibition at the Institute of Contemporary Art, University of Pennsylvania, April 2 – May 3, 1969. The participants included Sol LeWitt, Les Levine, Fred Sandback and many others.  Illustrated with photographic plates.  A very good copy in stapled wrappers.