Group of Five
In 1905, he was a witness to the Warsaw Uprising, and made some sketches of the event that were widely circulated. Later that year, he became part of the "Grupa Pięciu" (Group of Five), with Leopold Gottlieb, Wlastimil Hofman, and Jan Rembowski. Three years later, he joined the Society of Polish Artists "Sztuka" and began to exhibit widely throughout Poland and Austria.