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 Babbage, Charles, 1791-1871
 Bacon, Francis, 1561-1626
 Descartes, Rene, 1596-1650
 Huxley, Thomas Henry, 1825-1895
 Kant, Immanuel, 1724-1804
 Leonardo, da Vinci, 1452-1519
 Oliver, Charles A. (Charles Alexander), 1858-1932
 Rumford, Benjamin, Graf von, 1753-1814
 Tyndall, John, 1820-1893
 No Author Specified