PAN

PAN

Letter from Stefan Żółkiewski written in 26.11.1965

Letter to Stefan Morawski written 26.06.1967

Letter from Stefan Żółkiewski written in n.d.

Protocol from the meeting of the PPS Board 12.05.1957

Letter from Stefan Świeżawski written 10.07.1965

Letter from Irena Krońska written in 10.11.1954

Letter to Władysław Tatarkiewicz written 05.07.1968

Letter to the Polish Academy of Science written 01.07.1963

Letter from Tadeusz Kotarbiński written 07.02.1966

Letter from Stefan Morawski written N/D

Letter from Stefan Żółkiewski written in 22.02.1966

Letter from Henryk Jabłoński written 27.07.1963