PAN

PAN

Letter to the Polish Academy of Science written 24.10.1963

Letter from Tadeusz Kotarbiński written 07.02.1966

Letter from Stefan Morawski written 27.10.1965

Letter to the Polish Academy of Science written 28.04.1964

Letter to Irena Krońska written in 22.03.1954

Letter to Władysław Tatarkiewicz written 24.11.1962

Letter from Stefan Żółkiewski written in 12.03.1966

Letter from Stefan Świeżawski written 10.07.1965

Letter to the Polish Academy of Science written 16.11.1968

Letter to the Polish Academy of Science written 22.04.1965

Letter to Władysław Tatarkiewicz written 18.06.1960

Postcard from Stefan Morawski written N/D 2