London: Chapman & Hall, 1844. J. Henshall. unbound. Map. Engraving with original hand outline. Image measures 12.25" x 15" very good.
Clear and detailed town plan, with beautiful panoramic view below and an inset showing the environs of Oporto. The Society for the Diffusion of Useful Knowledge was formed in 1826 and published low cost maps with the goal of reaching a large market, while still maintaining high quality and precision.