and the artists of the Ashcan School, but he was deeply impressed by the originality of Klee, Kandinsky, and Feininger. He later told journalist Deloris Tarzan Ament, "It was the first time it occurred to me that there could be good art that I didn't like."

In 1926 Callahan had his first one-man show at San Francisco's Schwabacher-Frey Gallery; the following year he began his world