Unknown. (page 468)

Indian sailing ships described by Marco Polo, 15th century Unknown

Saltaire, Yorkshire, 19th century Unknown

Dr John Jeffries, American balloonist, 1786 Unknown

Henri Moissan, French chemist, c1900 Unknown

The Fuegian, York Minster, in 1833 (1839) Unknown

Woolsthorpe Manor, near Grantham, Lincolnshire, birthplace of Sir Isaac Newton, 1840 Unknown

Alfred Krupp, German industrialist and armaments manufacturer, 1886 Unknown

Etienne Jules Marey (1830-1903), with cine camera, 1903 Unknown

Jules Verne (1828-1905), De la Terre a la Lune, 1865 Unknown

Samuel Baker's boat hauled through river grass, 1864 (1874) Unknown

Joseph Jerome Lefrancais de Lalande, French astronomer, 19th century Unknown

Andreas Osiander, 16th century German Lutheran theologian, 17th century Unknown

Samuel Finley Breese Morse, American artist and inventor, 1872 Unknown

Photographer's studio, c1895 Unknown

Hypnotised subjects attracted by a matchbox, 1891 Unknown

Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868 Unknown

Joseph Louis Gay-Lussac, French chemist, physicist and balloonist, c1824 Unknown

John Dalton, English chemist, c1860 Unknown

Mining Pitchblende, Cornwall, England, c1916 Unknown

Linus Pauling, American chemist, c1954 Unknown

Workers at Nobel Explosives Company Limited, Ardeer, Ayrshire, 1884 Unknown

Albert Einstein, German-Swiss-American mathematician and physicist, with a student Unknown

Title page of A Discourse Concerning a New World & Another Planet by John Wilkins, 1683 Unknown

John William Strutt, 3rd Baron Rayleigh, British scientist, 1899 Unknown

Henri Etienne St Claire Deville, 19th century French chemist, (c1955) Unknown

Apollo 9 astronauts, 1968 Unknown

Illustration from De la Terre a la Lune by Jules Verne, 1865 Unknown

John Warde, out on a ledge on the 17th floor of the Hotel Gotham, New York, USA, 1938 Unknown

Dogfight between British and German aircraft, World War I, c1916-c1918 Unknown

Construction of one of the towers of the George Washington Bridge, New York, USA, late 1920s Unknown

James J Jeffries, American boxer, 1910 Unknown

Inspecting a telephone cable between Conduit and Maddox Streets, 20th century Unknown

The surrender of Jerusalem, World War I, 1917 Unknown

Building the sewer at Stratford High Street, West Ham, London, 1905 Unknown

Tramlines and vehicles on the Albert Embankment, Lambeth, London, 1909 Unknown

People in the street, Albury Street, Deptford, London, 1911 Unknown