Book I. [The cycle 12 Etudes op. 25 includes in two Books with plate numbers K. E. 33a.; K. E. 33b. ]., TP: engraved, p. [2]: blank; p. 3: CONTENU: Cahier I. Cahier II.; p. 4-16 engraved, p. [17 and next] missing., Heading, p.4: 12 ETUDES | » J. Nowakowski Op. 25. I., Footline, p. 4: Leipzig. Fr. Kistner. « .K. E. 33|a.; p. 5-16: .K. E. 33|a., TP: engraved, oval stamp "JAKUBOWSKI I ZADOROWICZ | LWÓW"
