Archduke Franz Ferdinand of Austria and his family, c1910 (c1920). The Archduke and Archduchess's assassination in Sarajevo in 1914 precipitated the First World War. Illustration from The Illustrated War Record of the Most Notable Episodes in the Great European War 1914-1918, seventh edition, (The Swarthmore Press Ltd, London, c1920). (Photo by The Print Collector/Print Collector/Getty Images)
