A handsome British map of Spain and Portugal by Samuel Dunn (d. 1794). Besides being a mapmaker, Dunn was a sometimes publisher of maps and atlases, a mathematician, and teacher, who advertised his profession as “S. Dunn Teacher of the Mathematicks London. Boards Young Gentlemen, & Teacheth Penmanship, Merch’ts Acc’ts, Navigation, Fortification, Astronomy &c. Chelsea.” Topography and political features are precisely engraved, and known rivers and lakes also. Overall, a fine example of British map-making from a period of growing world-wide power by the nation.