invitation

invitation

Invitation to scientific discussion written n/d

Letter from Tadeusz Kotarbiński written 04.03.1961

Letter from Tadeusz Czeżowski written 09.04.1968

Postcard from Stefan Szuman written 01.11.1937

Letter from Karol Irzykowski written 14.01.1936

Letter to Mieczysław Wallis written 29.10.1969

Postcard from Stefan Szuman written 23.11.1936

Letter to the Polish Academy of Science written 01.07.1963

Letter from Kazimierz Ajdukiewicz written 2/26/1961

Letter from Władysław Witwicki written 02.03.1922

Letter from Tadeusz Czeżowski written 10.04.1968

Letter to Kazimierz Twardowski written 04.05.1933