Etant Donnes: 1. la chute d'eau 2. le gaz d'eclairage Reflections on New York by Marcel Duchamp by Anne d'harnoncourt and Walter Hopps
8vo. pp. 67. b/w illustrations. paperback (near fine). Philadelphia: Philadelphia Museum of Art, 1987.
Second reprint of the Philadelphia Museum of Art Bulletin, Volume LXIV, Numbers 299 and 300, April - September 1969, with the 1973 Afterword by Anne d'Harnoncourt