1. South America : Sheet I, Ecuador, Granada, Venezuela, and parts of Brazil and Guayana Maps University Of Minnesota Public content 1842. Society for the Diffusion of Useful Knowledge (Great Britain). In: Society for the Diffusion ... General atlas ..., 1842, no. 149.; Engraved by: J. & C. Walker.; Below neat line at left: Humboldt, Schomburgk, C... George Cox (London).