The historical sources used in the research for this collection of texts were obtained from archives located on all the continents marked by the African diasporas, as well as on the African continent itself. For example, Lucilene  
Reginaldo, who studies the religious brotherhoods founded by Angolans in Brazil, did her archival research in Luanda, Salvador da Bahia and Lisbon. In her chapter on the presence of peoples from the northern coast of Mozambique in Madagascar, Klara Boyer-Rossol combined oral sources of the Makua people with a variety of written sources found in Malagasy, English, French, Norwegian and Portuguese archives on both sides of the Mozambique Channel. Here, numerous research experiences arose, involving multicontinental investigation aimed at tracking down historical sources of information on the experiences of Africans in the diasporas and in the communities established within the boundaries of the African continent.