@misc{_Photo, copyright={Public Domain}, howpublished={online}, title={Photo from the collection of Zygmunt Mokrzecki}, type={Image}, URL={http://www.rcin.org.pl/Content/185845/PDF/WA058_188958_Mokrzecki_kolekcja1.pdf}, keywords={Mokrzecki, Zygmunt (1865-1936)}, }