'An account of the number of ships with their tonnage which cleared out from Great Britain to Africa in 1788 and 1789..'

'An account of the number of ships with their tonnage which cleared out from Great Britain to Africa in 1788 and 1789..' printed document issued by Thomas Irving, Inspector General of the Imports and Exports of Great Britain and the British Colonies, showing the number of ships by port, the value of the British, East Indies and Foreign goods shipped (more than half a million) with comparisons between the two years.