Nikolay Leontievich Dubelt 1819–1874 Source: Wikimedia Commons About Nikolay Leontievich Dubelt Russian officer (1819–1874) People from the Same Era Machiel Polano 1813–1878 university teacher John Gregg Fee 1816–1901 Christian minister Bracken County Charles William Forman 1821–1894 missionary, preacher, writer Washington George Leighton 1826–1895 printer, printmaker Oscar Schlömilch 1823–1901 editor, mathematician, university teacher Weimar S. T. Gill 1818–1880 painter Somerset