We are aware that the interest in history, in the past decade, are increased and because of that the archival materials became the basis in researching historical processes. So, the digitized document, which allows the reconstruction of some events, becomes the indispensable part of every specialist’s work who deals with the protection of cultural heritage, scientific research or education of youth. That's why we decided to digitize the documents related to social events in southern Serbia in the eighties of the 19th century. The originals are kept in the Pedagogical Museum in Belgrade in the Fund Djordje S. Kojic. The Fund, among others, also keeps Kojic's letters, written in the eighties of the 19th century. These letters speak about the social events in the newly liberated regions. The analysis of his letters indicates to a gradual transformation of a backward environment which was supported by the educational and political work of the teachers.