All pages offset printing., From the collection "Méthode des Méthodes" by Moscheles and Fétis., This etude was also published in the complete edition published by Oxford University Press [T. I. Etudes] by Eduard Ganche in 1932. The authenticity of the source used by Ganche was questioned by Arthur Hedley, who published in 1940 the Etude in F minor on the basis of an autograph that was in his possession and deliberately corrected Ganche's edition., TP: inscription in ink: "Ofiarowuję Towarzystwu | im F. Chopina. | 19 Lipca 1957 r. | Arthur Hedley"., Foreword by Arthur Hedley., Heading, p. 3: Etude (1) [...] F. Chopin
