PAN

PAN

Letter from Kazimierz Wyka written 19.02.1967

Letter from Ksawery Piwocki written 11.11.1964

Letter to the Polish Academy of Science written 24.04.1969

Letter to the Polish Academy of Science written 17.05.1966

Letter to the Polish Academy of Science written 10.09.1963

Letter to the Polish Academy of Science written 22.09.1964

Letter from Stefan Żółkiewski written in 26.05.1964

Letter to Stefan Morawski written 23.06.1967

Letter to Władysław Tatarkiewicz written 10.05.1963

Letter from Roman Suszko written 15.02.1965

Letter from Stefan Morawski written N/D

Letter from Stefan Żółkiewski written in 26.11.1965