Images

Marble portrait heads of four Greek philosophers (Socrates, Antisthenes of Athens, Chrysippus, and Epicurus), Roman copies after Hellenistic originals. The British Museum, London.

Crazy Horse and his band of Oglala Sioux on their way from Camp Sheridan to surrender to General Crook at Red Cloud Agency on Sunday, 6 May 1877. Wood engraving by the artist Berghavy from sketches by Mr. Hottes, 1877. Library of Congress...

7th Cavalry Regiment guidon found at Slim Buttes fastened to the lodge of Chief American Horse. Although American Horse (the Elder) was not present at the Battle of the Little Bighorn, war trophies such as the guidon encouraged the destruction...

General William T. Sherman and Commissioners in Council with Sioux Chiefs at Fort Laramie, Wyoming, signing the Fort Laramie Treaty, 1868, ending Red Cloud's War. Native Americans are seated on the ground, commissioners on chairs. Seated...

A modern depiction of the Lakota Sioux trickster figure Iktomi (also known as Unktomi).

The progression from a basic two-cell building to a more elaborate layout incorporating a divided chancel area, first one extra aisle, then two, plus side chapels. By stage 3 only a few elements (black outline) of the original structure remain...

Ground plan of the Salisbury Cathedral showing the development of the layout of churches during the medieval period. Despite the complex layout with multiple aisles, transepts (G, H, O, P) and end (R) and side-chapels (W, X, 3-5), it preserves...

An ENIGMA cypher machine, used by Nazi Germany during the Second World War to send coded communications. Unknown to the Germans, the Poles, French, and British deciphered the code. (Museum of Science and Technology, Milan)

Auxiliary Territorial Service (ATS) personnel operating a searchlight during the Second World War (1939-45). Searchlights, often with the aid of radar, could help identify enemy aircraft for anti-aircraft gunners to shoot.

A photograph showing barrage balloons over London. The balloons were tethered on wires and deterred low-flying aircraft which could become entangled in them. Balloons were used to protect cities and important sites during the Second World...