The documents, from Admiralty records, consist of forty-six plans, 1704 to 1875. Two small-scale maps show Gibraltar about 1704 and two plans show the fortifications early in the century. Twenty-seven plans, elevations and sections show the New Mole and Fort, 1728 to 1751, with proposed alterations and additions to facilities. Fourteen plans and designs, 1734 to 1747, are for a new hospital. One map shows the dockyard, victualling yard and hospital in 1875