Louis Pope Gratacap 1850–1917 Source: Wikimedia Commons About Louis Pope Gratacap American geologist and author (1851-1917) People from the Same Era Henry N. White 1847–1863 Gorham Murray Hall 1840–1901 politician Govan Lajos Abafi 1840–1909 bibliographer, entomologist, historian, lepidopterist, literary historian, publisher Iecea Mare Paul Tannery 1843–1904 civil servant, engineer, hellenist, historian, historian of mathematics, mathematician, philosophy historian, translator Mantes-sur-Seine G.R. Brophy 1840–1920 Rev. United States Johanna Buska 1847–1922 actor, opera singer, stage actor Königsberg