The collection consists of a workbench and over forty tools, machines, and machine parts, relating to the experiences of Stefan Petri, who with his first wife, Janina, concealed a Jewish family, Kaufman, Ela, and their sons Marek and Jerzy Szapiro, in two hiding places he built in his home in Warsaw, Poland, from spring 1942 to September 1944.
Stefan Petri collection