According to Haynes and Klehr, "Throughout his life Oppenheimer declined to provide a detailed or accurate accounting of his relationship with the CPUSA in the late 1930s and early 1940s and of his knowledge of Communists who worked on the Manhattan Project."<ref>[[#refHK99|Haynes, Klehr 1999]]: 330</ref> | According to Haynes and Klehr, "Throughout his life Oppenheimer declined to provide a detailed or accurate accounting of his relationship with the CPUSA in the late 1930s and early 1940s and of his knowledge of Communists who worked on the Manhattan Project."<ref>[[#refHK99|Haynes, Klehr 1999]]: 330</ref> |