Polish Academy of Science

Polish Academy of Science

Letter to the Polish Academy of Science written 22.04.1965

Letter to the Polish Academy of Science written 04.10.1964

Letter from Kazimierz Wyka written 28.08.1968

Letter from Ksawery Piwocki written 27.12.1964

Letter from Stefan Żółkiewski written in n.d.

Letter to Stefan Morawski written 23.06.1967

Postcard from Stefan Morawski written N/D 2

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

Letter from Stefan Morawski written N/D

Invitation to scientific discussion written n/d

Letter to the Polish Academy of Science written 31.03.1965

Letter from Stefan Morawski written 03.06.1964