[Manuscript map of Guiana].1777"Copia de esto plano se remitio á la Conte en 28 de Febrero de 1777 con carta no. 320. Doctor Julian Viso."Manuscript map. Lakes, rivers, and swamps handtinted in green; limits of Dutch, French and Portuguese claims shown by red and dotted line, roughly paralleling the seacoast an the north bank of the Amazon as far as Fuerte Sn. Joseph de los Marivitanas; inside this line various European possessions indicated by lines of color as follows: Dutch, brown: French, yellow: Portuguese, green. Settlements shown by red dots. South at top.cartographic