Karl Benjamin in his studio, painting "Green Moon with WIndows," 1957.

Karl Benjamin in his studio with "#18", 1964.

Karl Benjamin, 1978.

Karl Benjamin at Chaffey College, 1969.

Karl Benjamin in his studio, circa 1972.

Karl Benjamin in his studio, 1978.

Karl Benjamin in his studio with sister Ruth Paris, circa 1972.

Karl Benjamin and Frederick Hammersley, 1981.

Karl Benjamin and Frederick Hammersley at L.A. Louver during Hammersley's solo exhibition Rules and Expectations, February 1981.

Karl Benjamin, circa 1983.

Karl Benjamin with students outside the Pomona College art building, circa 1982.

Karl Benjamin in his studio, circa 2005.

Karl Benjamin, 2007.

Karl Benjamin, circa 1970. 

Karl Benjamin in his studio, July 14 2011, photo by Jim McHugh.

Karl Benjamin in his studio, 1987, photo by Gary Colby.

Karl Benjamin in his studio, July 14 2011, photo by Jim McHugh.

Karl and Beverly Benjamin in the artist's studio in front of "Tape Grid #27", 1961, now in the collection of the Minneapolis Institute of Arts, 2006.

Karl Benjamin and "Mischa" in the artist's studio, circa 1990. 

Karl Benjamin at home with "Macho", July 2011, photo by Louis Stern.

Karl Benjamin at home in front of "#12", 1964, July 2011, photo by Louis Stern.

Louis Stern, Karl Benjamin and Elizabeth Armstrong (formerly of the OCMA and currently Assistandt Director of Exhibitions and Programs for the Minneapolis Institute of Arts) at the "Birth of the Cool" exhibition opening, 2007.

Karl Benjamin in front of the "interlocking Forms (Big Magenta with Green)", 1959 at the "Birth of the Cool" exhibition opening, 2007.