Polish Philosophical Society

Polish Philosophical Society

Postcard from Stanisław Ignacy Witkiewicz written 18.02.1937

Letter from Kazimierz Ajdukiewicz written 5/5/1949

Letter from Zofia Lissa written 14.02.1949 with an attachment

Letter to Tadeusz Czeżowski written 19.10.1954

Letter from Tadeusz Czeżowski written 09.04.1966

Letter to Irena Krońska written in 19.01.1955

Letter from Kazimierz Twardowski written 25.02.1928

Letter from Kazimierz Twardowski written 01.09.1936

Letter from Tadeusz Czeżowski written 11.12.1957

Letter from Tadeusz Czeżowski written 29.01.1961

Letter from Tadeusz Kotarbiński written 18.11.1934

Letter to Kazimierz Twardowski written 13.05.1933