Picker, with the help of Bormann, brought Stalin's Separate Peace Offer to Hitler in April 1943, who made it after consultation with Himmler, Ribbentrop and Canaris rejected.
[2] Both the second (1963) and third (1976) editions contain several testimonials by fellow bunker officers relating to the books's accuracy and authenticity, including General Gerhard Engel.
[5] Picker was involved in several legal battles with François Genoud and Hugh Trevor-Roper concerning the copyrights to the work.
[6] In 1963 Picker published a book about Pope John XXIII, in the preparation of which he was assisted by Vatican librarian Count Giuseppe Newlin (Mieczysław Dunin-Borkowski).
Hinter den Mauern des Vaticans : Der Papst der christlichen Einheit und des 2.vaticanischen Konzils / Henry, Dr. Picker, Landrat a.D., Historiker; Kardinal Loris Capovilla, Vatican, Privatsekretär Papst Johannes XXIII urn:nbn:de:101:1-2023021711044984498837 (Deutsche Nationalbibliothek) or https://daten.digitale-sammlungen.de/~db/0014/bsb00147020/images/index.html Henry Picker and his historical books were promoted and supported by Federal President Professor Dr. Theodor Heuss, Federal Chancellor Dr. Konrad Adenauer, by Pope Pius XII, by Pope John XXIII, by Pope Paul VI, and by Patriarch Athenagoras I. of Constantinople.