On pages [20-90] there is a pieces other authors than Chopin: Beethover, Schubert, Mendelssohn, Schumann, Liszt and Alabjew., On pages [1], [13] and [90] a round, black stamp: "NARODOWY INSTYTUT FRYDERYKA CHOPINA | BIBLIOTEKA" and a handwritten shelfmark in black link: "6345/n" on page [1].
