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Great Britain. Customs Establishment, Great Britain. Public Record Office, Walter E. Minchinton, and C. J. French. Ledgers of Imports and Exports, 1697-1780: Records of Imports and Exports to and from Britain and Its Colonies. East Ardsley, Yorks., Eng.: E.P. Microform Ltd., 1974.

Great Britain. Customs Establishment, et al. Ledgers of Imports and Exports, 1697-1780: Records of Imports and Exports to and from Britain and Its Colonies. E.P. Microform Ltd., 1974.