A new and accurate map of Portugal. Composed from the latest improvemts. and adjusted by the most authentic astronl. observats. By Eman: Bowen. (London: Printed for William Innys, Richard Ware, Aaron Ward, J. and P. Knapton, John Clarke, T. Longman and T. Shewell, Thomas Osborne, Henry Whitridge ... M.DCC.XLVII)