Maria von Siemens 1860–1939 Source: Wikimedia Commons People from the Same Era Frederick Lewis Gay 1856–1916 book collector, historian Boston William Spenser Currell 1858–1943 educator Charleston Jacob Ritsema 1869–1943 draftsperson, painter Haarlem Fredrik Franson 1852–1908 missionary Nora mountain parish Heinrich Beckurts 1855–1929 chemist, pharmacist, university teacher Brunswick Samuel Marinus Zwemer 1867–1952 Protestant theologian, missionary, orientalist, traveler, university teacher Zeeland Charter Township