1899- 1899-1970 1939-1945 20thcentury biography boykin canada casestudies congo(democraticrepublic) demas diaries diariesstairs economicconditions economicintegration espionage explorers generals german germanamericans germany history military newyork newyork(state) nordenbombsight palmini personalnarrativeseminpashareliefexpedition(1887-1889) personalnarrativeskatangaexpedition(1891-1892) robert sebold secretservice serialmurderinvestigation serialmurders silveria spies unitedstates worldwar