fuge in A minor, mazurka in B major - 1826., Published in the addition of weekly "Wędrowiec" on the occasion of the 50-th Anniversary of Chopin death, 1899, No 19., Title page, title of the addition: "NIEZNANE DZIEŁA | Fryderyka Chopina., to the newspaper "Wędrowiec"., Title page, in right, top corner: inscription in pencil "Janiny Deubel"., Page 2: blank., Page 8, footline: Дoзволено Цензурою. Варшава 1 Октября 1899 г. [space] Drukarnia, Biblioteki Dziel Wyborowych".
