acknowledgements

acknowledgements

Letter to Kazimierz Twardowski written 12.09.1927

Letter from Hans Cornelius written 22.11.1937

Postcard to Kazimierz Twardowski written 31.03.1922

Letter to Kazimierz Twardowski written 29.02.1928

Letter to Kazimierz Twardowski written 28.02.1936

Postcard to Kazimierz Twardowski written 19.08.1924

Letter to Kazimierz Twardowski written 16.08.1929

Letter to Kazimierz Twardowski written 23.12.1931

Letter to Kazimierz Twardowski written 28.11.1924

Letter from Konstanty Michalski written 11.03.1938

Letter to Kazimierz Twardowski written 19.03.1924

Letter to Kazimierz Twardowski written 27.01.1923