Anonymous

Władysław Bielecki (Polish, 1896-1942)

Winifred Brent Mackenzie (American, 19th/20th century)

Anonymous

Heinrich Vogeler (German, 1872 – 1942)

Anonymous

Otto Ubbelohde (German, 1867 – 1922)

Anonymous

Anonymous

Kornél Révész (Hungarian, 1885-1944)

Louis Rhead (American, 1857-1926)

Felix Hollenberg (German, 1868-1945 )