PAN

PAN

Letter to Stefan Żółkiewski written in 23.12.1965 (b)

Letter from Ksawery Piwocki written 11.11.1964

Letter to the Polish Academy of Science written 10.09.1963

Letter from Polish Academy of Science written 21.04.1966

Letter to Stefan Żółkiewski written in 21.10.1966

Letter to Władysław Tatarkiewicz written 04.11.1960

Letter to the Polish Academy of Science written 31.03.1965

Letter from Stefan Morawski written 30.11.1965

Letter from Kazimierz Wyka written 28.08.1968

Letter from Henryk Markiewicz written 15.07.1963

Letter from Stefan Morawski written N/D

Letter to the Polish Academy of Science written 15.09.1964