The authors would 1ike to acknowledge the invaluable assistance of the many staff members of the Corcoran Gallery of Art who made it possible to photograph and research the sculptures from the gallery’S collection included in this book and the accompanying exhibition．Chief among them are Sarah Cash，Bechhoefer Curator of American Art．who tirelessly coordinated the Corcoran’S role in faCt．checking and editing the manscript and who managed all details of the exhibition．In the lat-ter capacity she received expert collaboration from Paul Roth，Assistant Curator of Photography and Media Arts．