On September 26, 1978, Zosa Szajkowski was found dead. A few days earlier, he had been arrested…

On September 26, 1978, Zosa Szajkowski was found dead. A few days earlier, he had been arrested outside of the New York Public Library in an organized police sting operation. The historian had been using the library for decades, and the staff there knew him well. One evening, when librarian Claire Dienstag was on duty at the reference desk, she noticed that Szajkowski had propped a large volume…