PAN

PAN

Letter to the Polish Academy of Science written 10.09.1963

Letter to Władysław Tatarkiewicz written 08.12.1966

Letter from Kazimierz Wyka, Bronisław Baczko and Witold Kula written 16.12.1966

Letter to Władysław Tatarkiewicz written 22.03.1969

Letter from Kazimierz Ajdukiewicz written 3/12/1956

Letter to the Polish Academy of Science written 17.05.1966

Letter to Stefan Żółkiewski written in 23.12.1965 (a)

Letter to Władysław Tatarkiewicz written 27.06.1969

Letter from Stanisław Urbańczyk written 22.02.1965

Letter to Tadeusz Kotarbiński written 23.02.1961

Letter from Ksawery Piwocki written 11.11.1964

Letter to the Polish Academy of Science written 11.03.1965