The author examines the problems of resources and scientific communication actors as related to the idea of the revival of the Russian system of sci-tech information and the task of building the register of research resources. The author describes the RAS INION (Institute of Scientific Information for Social Sciences of the Russian Academy of Sciences) project of such register in historical and philological disciplines. The goals, subjects and study area are defined. The author identifies and reviews in detail the key categories of related institutions along with other categories being examined on the top hierarchical levels. He also discusses the methodological aspects of the register acquisition and registration of the the actors of the Russian scientifiс communication, in particular, actors classification by various attributes, problems of their detailing in large hierarchical institutions. As the case study, the HSU NRU historical and philological resources are analyzed. The issue of the actors’ government affiliation is discussed. The author cites the statistical data on the project and describes several actor categories. The organizational aspects of building the national register of scientific communications are considered.