Sir Walter Raleigh (1848). “The Discovery of the Large, Rich, and Beautiful Empire of Guiana: With a Relation of the Great and Golden City of Manoa... Etc. Performed in the Year 1595, by Sir W. Ralegh, Knt... Reprinted from the Edition of 1596, with Some Unpublished Documents Relative to that Country. Ed., with Copious Explanatory Notes and a Biographical Memoir, by Sir Robert H. Schomburgk”, p.223