Jongkind and the Pre-Impressionists : painters of the Ecole Saint-Siméon : Smith College Museum of Art, Northampton, Massachusetts, October 15-December 5, 1976, Sterling and Francine Clark Art Institute, Williamstown, Massachusetts, December 17, 1976-February 13, 1977 / Charles C. Cunningham, with Susan D. Peters and Kathleen Zimmerer