Polish Painting Masterpieces
Artur Grottger
"Crossing the Border", 1865, oil on canvas, 53.5 x 42.5 cm, National Museum, Cracow

Source: „Artur Grottger, 1837-1867”, „Wielka kolekcja slawnych malarzy” series, Oxford Educational, Poznan 2008, ISBN 978-83-252-0123-4