Rare Admiralty chart of Sombrebo Island.

Captain John Hayes (1775-1838), saw extensive service in the Napoleonic Wars. In 1810 he was in command of HMS Freija in the West Indies and saw action in the Invasion of Guadeloupe.

John Walker, founding members of the Royal Geographic Society, was a leading mapmaker and engraver working in London in the first half of the nineteenth century. He is known to have produced numerous charts for James Horsburgh and the Admiralty.