Louise Duffield Cummings 1870–1947 Source: Wikimedia Commons About Louise Duffield Cummings Canadian-born American mathematician (1870-1947) People from the Same Era Teodoro R. Yangco 1861–1939 politician San Antonio Yang Jeonbaek 1869–1933 pastor Leendert Scheltema 1876–1966 draftsperson, engraver, painter Nes Abraham Cressy Morrison 1864–1951 chemist Wrentham Joseph Delmont 1873–1935 cinematographer, circus performer, film actor, film director, journalist, novelist, science fiction writer, screenwriter, writer Lichtenau im Waldviertel Herbert Henry Vogt 1877–1938 Mayor of Massillon, Ohio