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Postcard from Stefan Szuman written 24.03.1943

Postcard from Stefan Szuman written 28.05.1942

Letter from Stefan Szuman written 06.10.1942

Postcard from Stefan Szuman written 14.01.1943

Letter from Kazimierz Ajdukiewicz written 01.12.1927

Letter from Jan Patočka written 22.05.1949

Letter from Tadeusz Kotarbiński written 19.05.1923

Letter from Tadeusz Kotarbiński written 14.01.1926

Letter from Stefan Szuman written 18.12.1942

Postcard from Kazimierz Ajdukiewicz written 04.08.1925

Postcard from Kazimierz Ajdukiewicz written 17.03.1923

Postcard from Stefan Szuman written 19.11.1942