From the Polish History Museum - Warszawa, Poland
Structure of the Polish Underground State and its relationship to the Government-in-Exile, 1942.
"The Polish Government-in-Exile in Angers, France, entrusted Jan Karski with memorizing the draft structure of the Polish Underground, the division of responsibilities and communications. Emissary Karski transmitted the whole concept to the political leaders in occupied Poland. On the basis on these directives, the first and the most significant resistance movement in wartime Europe took shape."