Op. 37/1 p. 3-5, Op. 37/2 p. 6-9., TP: in the top right corner with a black pen: No. 1424., TP: handwritten, illegible signature in the lower right corner., TP: at the bottom of the page round blue illegible stamp, page [2] black round stamp: "NARODOWY INSTYTUT FRYDERYKA CHOPINA | BIBLIOTEKA" handwritten shelfmark in pencil: "3213/n". Same stamp on page 10.
