In German.

In pencil at the top left-hand corner: "Ans no".

Knorr lived 1921-2018. His Wikipedia article in German mentions BR’s support and the many organizations he worked for. One of Knorr’s “crimes” was insulting generals of the Wehrmacht who continued to serve after Hitler. “Mass murderers” he called them, for which offence he received a relatively light punishment. BR met with Knorr in 1965 and made several public statements on his behalf. (None of them have made it to the Russell Bibliography for lack of knowledge of where they were published.) (Note added in 2018 by K.B.)