What errors are contained in the real book?

After the play inspired numerous scholarly and media debates over the 1941 meeting, the Niels Bohr Archive in Copenhagen released to the public all heretofore sealed documents related to the meeting, a move intended mostly to settle historical arguments over what they contained. Among the documents were the original drafts of letters Bohr wrote to Heisenberg in 1957 about Jungk's book and other topics. The documents added little to the historical record but were interpreted by the media as supporting the "Bohr" version of the events. According to the archivists, the letters were released "to avoid undue speculation about the contents of the draft letter", which had been known about but not been open to historians previously.