BKF

BKF

Letter to the Committee of the Library of Classics of Philosophy written 30.09.1954

Letter to the Committee of the Library of Classics of Philosophy written 14.04.1954

Letter to the Committee of the Library of Classics of Philosophy written 14.05.1954

Letter to Tadeusz Kotarbiński written 12.10.1949

Letter to the Committee of the Library of Classics of Philosophy written 12.01.1954

Letter to the Committee of the Library of Classics of Philosophy written 09.03.1954

Letter to the Committee of the Library of Classics of Philosophy written 04.07.1951

Letter to the Committee of the Library of Classics of Philosophy written 21.06.1952

Letter to the Committee of the Library of Classics of Philosophy written 29.11.1951

Letter to the Committee of the Library of Classics of Philosophy written 10.12.1953

Letter to Henryk Elzenberg written 05.06.1951

Letter to Tadeusz Kotarbiński written 29.05.1953