Inspired by my impending visit, I present some color illustrations from Jean-Baptiste Debret's famous and extremely out of print Voyage Pittoresque et Historique au Brésil (1834-39).
"Valley of Serra do Mar (mountain chain near the sea)"
"Family of a Camacan chief preparing for a feast."
"Mummy of a Chief of Coroados"
"Black slaves of different nations."
"Black hunters returning to town (left); the return of the slaves of a naturalist (right)."
For more on these images see this 2006 BibliOdyssey post on the Voyage Pictoresque, and for a complete, searchable database of all the images, see the New York Public Library's excellent Digital Gallery.
Finally, here's a link to one of my favorite bands, Os Mutantes, then still teenagers, backing up Gilberto Gil and his song 'Domingo no Parque' on national television, circa 1966. Its a wonderful live performance -- highly recommended to anyone with an interest in Brazilian music, or just music in general.