contract

contract

Contract with the National Scientific Publishers written 10.12.1954

Letter to Tadeusz Kotarbiński written 29.05.1953

Postcard from Henryk Elzenberg written 07.05.1964

Letter to the Committee of the Library of Classics of Philosophy written 09.07.1951

Postcard from Henryk Elzenberg written 20.04.1964