![Jan Karski (standing), underground courier for the Polish government-in-exile who informed the west in the fall of 1942 about Nazi ... [LCID: 90536]](https://encyclopedia.ushmm.org/images/large/9e6a498b-ce8b-441d-be8a-1ef2035b1d1a.jpg)
Jan Karski (standing), underground courier for the Polish government-in-exile. He informed the west in the fall of 1942 about Nazi atrocities against Jews taking place in Poland. Pictured in his office in Washington, DC, United States, 1944.
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