J.Beck's official visit in Berlin, July 1935, from the left: ambassador J.Lipski, Polish minister of foreign affars Jozef Beck and his German counterpart K. von Neurath. Source - National Digital Archives of Poland

The archives of the Józef Piłsudski Institute hide many secrets, and although all the collections are now widely available and anyone interested in history has access to the documents that was not always the case. In the past, some of the documents were secretly kept.

Marian Chodacki at the Polish Legions 1915, from the Pilsudski Institute Archives