Abstract
The development of these initiatory collections in the context of the political tensions of the twentieth century not only made possible the material preservation of many collections while others were written forever from the hands of history, but also their political and theoretical stakes contained hypotheses that gave rise to the creation of a tradition. Therefore the organization of these different collections during the 20th century was of crucial importance for the preservation of documentation because of the possibilities they opened up for research. The technological leaps of the 20th century, together with the professionalization of disciplines such as librarianship and archival science, concentrated in these years the development and visibility of the documentary collections on which humanity will rely from now on.
From the personal collections of activists to professional documentation centers, our journal insists on the importance of the different collections as providers of the conditions of possibility -material and intellectual- of historical research. In all cases, the texts compiled in this section propose an analysis of the preserved collections, their projects, their modifications and their own history, with suggestive reflections on the links between documentary history, political history and the historiographic task.
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