ACKNOWLEDGMENTS

4—Martin Nathan
12—Hallawell Photos, U.P.I., Cornell Capa-Magnum, A.P., John G. Hemmer, A.P.
19—John G. Zimmerman
29—drawing by Ajay
31—Brian Seed
45—top, Keystone
50—Frank Lerner
51—Mr. and Mrs. Charles S. Payson; Fogg Art Museum, Harvard University, Louise E. Bettens Fund; Butler Institute of American Art; Worcester Art Museum; collections of IBM Corp.; Commissioners of Fairmount Park, William L. Elkins Collection, courtesy of Philadelphia Museum of Art; National Gallery of Art, gift of Avalon Foundation; Brooklyn Museum Collection; Mrs. Richard de Wolfe Brixey; Mr. and Mrs. Carleton Mitchell; Addison Gallery of American Art, Phillips Academy, Andover, Candace C. Stimson Bequest; Museum of Fine Arts, Boston
52—Tony Triolo
53—Kim Massie, Fairbanks Foto
54—Lou Witt, Bechner Photo Service, Howard Staples
56—Anthony Ravielli
60—Hy Peskin