p. [i] handritten in blue ink: 3457, p. [ii] round black stamp: "NARODOWY INSTYTUT FRYDERYKA CHOPINA | BIBLIOTEKA". The same on p. [14, 56]., p. [v] a round, green stamp: "TOWARZYSTWO IM. F. CHOPINA | BIBLIOTEKA | WARSZAWA". The same on p. [56], p. 25: in the lower right corner, an illegible signature in a blue pen
