 After World War II, in July 1945, he resettled in Warsaw.There, he took about a thousand photographs of destroyed and restored Warsaw, and about two thousand of the western land attached to Poland.Though Jan Bułhak's son Janusz studied music at the Vilnius Conservatory, the father taught him photography, so Janusz joined him in 1940s and all photographs made from 1945 to 1949 are signed "Jan Bułhak and son".