Louis Graveure 1888–1965 Source: Wikimedia Commons About Louis Graveure English actor and baritone singer known as "The Mystery Man" People from the Same Era Émile Dewoitine 1892–1979 aerospace engineer, military flight engineer Crépy Jerzy Gablenz 1888–1937 composer, conductor Kraków Aleksandrs Apsītis 1880–1943 designer, draftsperson, graphic artist, illustrator, painter, watercolorist Riga Ernst Walb 1880–1946 economist, university teacher Alzey František Zajíček 1896–1954 railway worker Krásné Březno Heinz Witte 1880–1961 painter Hude