The article deals with socio-cultural dominants of the library partnerships. The interpretation is based on the quantitative and content analysis of database records «Librarianship and bibliography», which supported currently by the Center for Studying Problems of Libraries Development in the Information Society of the Russian State Library. 266 items were selected based on searching the words «partnership», «cooperation» and all their derived forms in the records relating to Russia taking into account their fixation in headings and abstract texts. The author attempts to trace the dynamics of reflecting the libraries partnership experience in publications (monographs, articles in professional press, conference proceedings, manuals and textbooks) for 2010-2015 taking into account the status of partnerships (international, regional, urban, rural ones), related strategic objectives, tactical means of achieving them, the importance of choosing a particular partner in terms of the final result of cooperation, the partnership place. The ration of activities to promote reading and cultural activities in modern Russian libraries considers in the partnership frames. The author came to the following conclusions: the chronological distribution of the data detects the trend of growing attention to the topic of partnerships in 2010-2015; in spite of the diversity of the concrete wordings, main targets are: cultural, promote reading, enhance the role of libraries in society, the positioning of «own» territory (region, city, district, etc.). Their employees think that the key to the libraries relevance are less associated with the reading process. In searching the means to adapt libraries to the information society conditions, which are guides in the information world, library professionals are increasingly turning to the popularization of domestic tourism, the creation of the mental orientation system relevant to the local population, participation in local cultural events. «Small motherland» is perceived as the most important marker of identity, and the libraries partnership with other cultural institutions and public associations as an effective demonstration of the libraries’ capabilities in the society cultural mobilization.