Polish Painting Masterpieces
Henryk Rodakowski
"Portrait of Zofia Kossak", 1856, watercolour, gouache, charcoal on paper, 44.7 x 27.8 cm, National Museum, Warsaw

Source: Gowin, Slawomir, „Henryk Rodakowski [1823-1894]”, „LUDZIE CZASY DZIELA” series, Edipresse Polska S.A., Warszawa 2007, ISBN 978-83-7477-210-5