"... an envelope ... caught his eye... The return address read, "Upton Sinclair..." "... I am here trying to make plain my own part in the story." "The story was "Boston," Sinclair's ... condemnation of the trial and execution of Sacco and Vanzetti, Italian immigrants accused of killing two men in the robbery of a Massachusetts shoe factory..." "... Sinclair met with ... the men's attorney..." "..."I begged him to tell me the full truth," Sinclair wrote. " … He then told me that the men were guilty, and he told me in every detail how he had framed a...