O11391 CI+ 20201019080000.0 Lämmel, Karl Moritz AUTH6815 Lämmel, Martin Moritz AUTH6814 Leipzig (7012329) : 1840s–1860s graphite (mineral) GETTY:300011098 paper (fiber product) GETTY:300014109 printing ink GETTY:300187371 18.7 cm x 13.4 cm printing (process) GETTY:300053319 PL-Wnifc Muzeum Fryderyka Chopina Narodowy Instytut Fryderyka Chopina MC/663