Louis Pope Gratacap 1850–1917 Source: Wikimedia Commons About Louis Pope Gratacap American geologist and author (1851-1917) People from the Same Era Ludwik Rydygier 1850–1920 military officer, physician, politician, surgeon, university teacher Dusocin Patrick J. Heffernin b. 1856 politician Henry Lansdell 1841–1919 explorer Tenterden Anna Sneed Cairns 1841–1930 chancellor New Albany Nikolaos Karastergios 1850–1910 politician Larissa Agrafena Kryukova 1855–1921 spoken word artist Chavanga