I knew that the Johnson people, who for almost forty years had attacked every attempt to prove that Lyndon Johnson stole the election, who had told so many lies about it, were going to lie and deny about this one. But I asked it: With my heart in my throat, I asked Mr. Salas if I could make a copy of the manuscript. He said I could, reiterating that he wanted history to know the truth. “Everyone is dead except me, Robert. And I’m not going to live long. But Box 13 is history. No one can erase that.”