Wilhelm Breslauer (1787–1949) volunteered at the MdbK. He was the chairman of the Friends of the Graphic Art Collection Association, which was founded in 1921. By 1933, the association had acquired several hundred prints for the museum, as well as financing the furnishing of rooms and conservation measures. Breslauer and his two daughters emigrated due to persecution under National Socialism. His first wife, Erna (1889–1940) — the mother of his children — was murdered. She was a victim of the so-called 'euthanasia programme', which involved the systematic murder of people with mental and physical disabilities, as well as mental illnesses.