Polish Painting Masterpieces
Piotr Michalowski
"Grooms with Horses and a Dog", c. 1845-55, watercolour on paper, 26 x 39 cm, Silesian Museum, Katowice

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