PAN

PAN

Letter to Władysław Tatarkiewicz written N/D (b)

Letter to Władysław Tatarkiewicz written 18.06.1960

Letter from Stefan Żółkiewski written in 25.03.1966

Letter to the Polish Academy of Science written 04.10.1964

Letter from Stefan Morawski written 30.11.1965

Letter to Władysław Tatarkiewicz written 20.05.1961

Letter to the Polish Academy of Science written 24.04.1969

Letter to the Polish Academy of Science written 18.01.1965

Letter to Władysław Tatarkiewicz written 09.05.1961

Protocol from the meeting of the PPS Board 12.05.1957

Letter to the Polish Academy of Science written 22.09.1964

Letter from Kazimierz Wyka written 14.07.1967