O5438 CI+ 20201019080000.0 1833-1842 India ink (ink) GETTY:300015018 handmade paper THES42641 ink GETTY:300015012 32.4 cm x 25.3 cm handwriting GETTY:300252927 Grabowski, Christophe, Rink, John. Annotated Catalogue of Chopin's First Editions (AC Online) AUTH2216 10–1*-Sm http://www.chopinonline.ac.uk/aco/catalogue/etudes-opus-10/101-sm-1/ PL-Wnifc Muzeum Fryderyka Chopina Narodowy Instytut Fryderyka Chopina M/610