Created in 1934, the Coit Tower murals were sponsored by the Public Works of Art Project (PWAP), the first of the New Deal art programs. Twenty-five master artists and their assistants worked there, most of them in buon fresco, Nearly all of them drew upon the palette and style of Diego Rivera. The project boosted the careers of Victor Arnautoff, Lucien Labaudt, Bernard Zakheim, and others, but Communist symbols in a few murals sparked...