The Museum of Brazilian Literatura Collection (MLB), conceived by the writer Lygia Fagundes Telles, holds an appreciable number of literary documents from different authors, but it was never finalized as a real institution. Therefore, it constitutes a gap both for the historiography of literature, museology, and archivology – three areas articulated in this dissertation. The unknown manuscripts, photographs and letters, under the custody of the Institute of Brazilian Studies (IEB) since 1977, were organized in two categories: document and movement. The researchable items in the document category are in the Museum s collection; while there are those with news behind the scenes in the movement category, revealing a fine articulation between Olga Savary, José Geraldo Nogueira, Almeida Fischer, Plínio Doyle and Lygia Fagundes Telles. Telles will be the principal character whose profile as a writer will matter less than the public manager. To understand the complexity of the Museum s creation initiative, the time frame offers four approaches: hardening military dictatorship, consolidation of preservation policies, development of studies on genetic criticism, and review of museum studies. Primary sources from other institutions were used as bridges, which indicates the methodology adopted by this dissertation, which based on the MLB as the main object, seeks to rethink the notion of literary archive by the volition, community, and desire, as well as the relationship between memory and thought spaces. To materialize the museum that was not born, museudaliteratura.com.br was created, where one can find all the items that originally would have been part of the institution.