Polish Painting Masterpieces
Piotr Michalowski
"Horse Cart Loaded with Gypsum", c. 1844-46, oil on canvas, 38.5 x 66 cm, National Museum, Warsaw

Source: Czapska-Michalik, Magdalena, „Piotr Michalowski [1800-1855]”, „LUDZIE CZASY DZIELA” series, Edipresse Polska S.A., Warszawa 2007, ISBN 978-83-7477-208-2