Images

Passmore Williamson, abolitionist, in Moyamensing Prison in 1855, portrait by Emil Luders, lithograph by Augustus Kollner, published by Thomas Curtis, Philadelphia, c. 1855. Library of Congress, Washington, D.C.

Passmore Williamson, abolitionist and member of the Underground Railroad, c. 1856-1860, photograph by Guterkunst & Brothers, 1856-1860. Boston Public Library.

A 1909 photograph of Tsar Nicholas II (reign 1894-1917), ruler of the Russian Empire.

A 1905 photograph of the Russian Orthdox priest Georgy Gapon (1870-1906). On Bloody Sunday in 1905 peaceful protestors led by Gapon wished to present Tsar Nicholas II (reign 1894-1917) with a petition of reforms but were shot...

An illustration showing Bloody Sunday in 1905 when on 22 January peaceful protestors led by Father Georgy Gapon (1870-1906) wished to present Tsar Nicholas II (reign 1894-1917) with a petition of reforms but were...

Jane Johnson emancipates herself and her children by walking away from her former 'master', John Hill Wheeler, into the free city of Philadelphia, Pennsylvania, in July 1855. Illustration from The Underground Railroad...

A photograph taken in 1917 during the First World War (1914-18) showing a U-boat (UC-1 class) of the German Imperial Navy. This type of submarine was used to lay mines. Imperial War Museums, London.

A photograph of German U-boats and their pens, taken in Trondheim, Norway in 1945 at the end of the Second World War (1939-45). (Imperial War Museums)

A photograph taken during the Second World War (1939-45) showing Admiral Karl Dönitz (1891-1980), who was head of the German U-boat service, congratulating U-Boat crews. Taken in May 1942. (Imperial War Museums...

A photograph of the German U-Boat 570 after it was captured in 1941 and renamed HM Graph during the Second World War (1939-45). (Imperial War Museums)