Philosophical Society

Philosophical Society

Letter from Stefan Szuman written 06.03.1939

Letter from Mieczysław Wallis written 13.03.1936

Letter from Irena Sławińska written 19.02.1954

Letter from Irena Sławińska written 19/12/1954

Letter to Kazimierz Twardowski written 29.03.1923

Letter from Władysław Witwicki written 11.04.1938

Letter to Stefan Żółkiewski written in 23.12.1965 (b)

Letter to Kazimierz Twardowski written 15.02.1928

Postcard from Kazimierz Twardowski written 19.10.1920

Letter from Kazimierz Ajdukiewicz written 18.04.1925

Letter from Kazimierz Ajdukiewicz written 14.06.1925

Letter to Kazimierz Twardowski written 20.03.1925