Mario Melo’s publication of the results of his in investigation in 1929 was the first historical and ethnographic information about the Fulni-ô ever published. Other sources with information of that nature are the texts written by Max Boudin and Estêvão Pinto, responsible for most of the ethnographic information available on the Fulni-ô, especially in what refers to their clan organization and the Ouricuri ritual. The information was gathered among the Fulni-ô in the 1940s, when the ritual was beginning to be hidden by a wall of secrecy.

Data on the founding of the city of Águas Belas can be found in the works of Mario Melo, Estêvão Pinto, and in a book written by Sanelva de Vasconcelos specifically about that.

For the structure of the Ia-tê, the language spoken by the Fulni-ô, Geraldo Lapenda’s book should be consulted. Another text with some information on this topic is Lemos Barbosa’s.

Regarding living conditions in the Fulni-ô village in the 1960s, there is a report by Mabel Cerqueira Vianna.

The Master’s thesis by Jorge Hernández Díaz, of 1983, and Miguel Vicente Foti, of 1991, both presented at the Universidade de Brasília, have information about the new conditions in which the Ouricuri ritual is performed. With regards to land leases, one may check Hernández Díaz’s thesis as well as Sidnei Clemente Peres’s, who presented it at the Universidade Federal do Rio de Janeiro (UFRJ)’s Museu Nacional (National Museum) in 1992. There are also more recent reports by Ivson José Ferreira.