£25,000
By RATZER, Bernard, January 12, 1776
£4,000
By BECK, Harry, [January, 1933].
£15,000
By FADEN, William, April 30, 1778.
£15,000
By NASA, 1 July 1976.
£25,000
By ROCHEFOUCAULD-LIANCOURT, François Alexandre Frédéric, duc de la; Abraham BRADLEY (1767-1838), 1799.
£1,000
By WYLD, James, 1857.
A revolution in epidemiology – John Snow’s cholera map
Dubai from the sky 

