In order to contribute for comprehension of the History of Brazilian children’s literature, it focuses the contribution of the Brazilian teacher and librarian Lenyra Camargo Fraccaroli (1908-1991). By means of historical approach, focusing on documentary and bibliographical research, using procedures such as locating, recovering, assembling, selecting and ordering documentary sources, it was elaborated a research guide that contains references of texts written by Lenyra Fraccaroli and references of texts by other authors dealing with aspects of their life and their professional performance. She was a teacher at the Escola Normal de São Paulo in 1932 and a librarian at the Escola de Sociologia e Política de São Paulo in1940. Lenyra Fraccaroli was born in Rio Claro in the state of São Paulo on April 21, 1908. She worked as a librarian in the Biblioteca Infantil "Monteiro Lobato" in São Paulo (SP) for 25 years, and, after her retirement. She was member of different institutions related to reading, books and children and was founder and president of the Academia Brasileira de Literatura Infantil e Juvenil (ABLIJ).It was analyzed the textual configuration of the text “Bibliotecas Infantis", which was presented by Lenyra Fraccaroli during the 2º. Encontro de Bibliotecas Públicas e Escolares do Estado de São Paulo e 4º. Encontro de Bibliotecas Públicas do Interior de São Paulo in the city of Santo André (SP-Brazil), in 1976. In this text, Fraccaroli focused that the production of Brazilian children's literature was inaugurated by writers Thales Castanho de Andrade and José Bento Monteiro Lobato and that children's libraries were an important means of disseminating this production for Brazilian children. However, in the 1970s there were few initiatives for the development of “good reading” for instruct and nurtured children of culture and education. Fraccaroli criticized books with attractive engravings, but with "inconvenient" histories for the moral children.At the end of text, Fraccaroli presents the bibliography containing the names of scholars and researchers of children's literature, who contributed to the constitution of the history of this genre in Brazil. Among those cited are: Leonardo Arroyo; Antenor dos Santos Oliveira; Heloisa de Almeida Prado; Júlio César de Melo; Denise Tavares; Bárbara Vasconcelos de Carvalho and Nazira Salem. The results obtained allow us to understand that for Fraccaroli, reading and books were fundamental for the "modern progress" of Brazilian society. The children's library would be the first place to develop the habit of reading, and the librarian responsible for indicating good readings for children.Thus, the creation of children's libraries, initiated by Fraccaroli, boosted the growth of the publishing market for children and, consequently, contributed to the emergence of new authors of children's literature.