Plan of ye entrance of Pensacola harbour shewing ye situation of the new batteries laid out & begun building in March 1771.
Map executed in the style of Thomas Sowers, who was the engineer in charge of building the new fortifications at Pensacola.; Finished, colored chart of part of the harbor showing soundings and shallows.; Plans show details of the fort at Red Cliffs and batteries and forts on the mainland and Rose Island with notations describing three new batteries.
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