Official Press of the State of São Paulo (Imesp))
National Archive
National History Association
National Council of Archives – CONARQ
Public Archives of the State of São Paulo
Brazilian Society of History of Education
USP Education Memory Center
CPDOC
Spanish Society for the History of Education
National Conductors Library
National Library Foundation
Institute of Brazilian Studies
Casa de Rui Barbosa Foundation
Royal Portuguese Reading Cabinet
Bibliothèque Nationale de France (BNF)
Mario de Andrade Library
Malba Tahan – official website
Gallica
Center for Documentation and Literature for the History of the School Book and Literature for Children