Letter to the Committee of the Library of Classics of Philosophy written 01.04.1952

Postcard from Władysław Tatarkiewicz written 24.01.1949

Letter from Tadeusz Czeżowski written 12.03.1967

Letter to Tadeusz Czeżowski written 19.10.1954

Letter from Władysław Tatarkiewicz written 22.04.1950

Allowance for academic work written 15.11.1927

Letter from Stanisław Wędkiewicz written 27.01.1948

Letter to Władysław Tatarkiewicz written 29.10.1969

Letter from Tadeusz Czeżowski written 17.05.1958

Letter to Kazimierz Twardowski written 01.03.1925

Letter from Tadeusz Kotarbiński written 04.11.1926

Letter from Stefan Szuman written nd-2