"The Defeat of the Floating Batteries at Gibraltar, September 1782", John Singleton Copley
"Colonel Ernst August von Hugo and Lt. Colonel von Schlepegrell" by John Singleton Copley
An oil painting depicting two German officers who participated in the Siege of Gibraltar; Copley made it as a preparatory study for a larger painting on the siege.
"Plan de Gibraltar" from Le Petit Atlas Maritime by Jacques-Nicolas Bellin, 1764
the layout and military defenses of Gibraltar
"Account of the siege of Gibraltar" from The Scots Magazine (September 1781), pages 478-481
Four pages from September 1781 issue of The Scots magazine, published in Edinburgh. These pages give accounts of the Siege of Gibraltar, a battle in the American Revolutionary War.
A photograph of a segment of a 1760 map of Gibraltar.