Retaining the original : multiple originals, copies, and reproductions. (National Gallery of Art ; Distributed by the University Press of New England, 1989)
"Proceedings of the symposium "Retaining the Original: Multiple Originals, Copies, and Reproductions," jointly sponsored by the Center for Advanced Study in the Visual Arts, National Gallery of Art, Washington, and The Johns Hopkins University, Baltimore, 8-9 March 1985."