Polish Painting Masterpieces
Aleksander Orlowski
"Nobleman", 1818, crayon, sanguine on paper, 31.3 x 20.6 cm, National Museum, Warsaw

Source: Gowin, Slawomir, „Aleksander Orlowski [1777-1832]”, „LUDZIE CZASY DZIELA” series, Edipresse Polska S.A., Warszawa 2007, ISBN 978-83-7477-218-1