he article is prepared on the occasion of the 125th ann iversary of Yury Vladimirovich Grigoriev, prominent Russian librarian. The authors outline the circle of scientific and friendly contacts of the scientist based on the analysis of gift inscriptions on books in Grigoriev’s personal book collection, now preserved in the library collection of Tambov State University named after G.R. Derzhavin. The authors introduce new factual data about the scientist's personal book collection into scientific circulation. The personal library numbers over 6,000 copies, among them 326 editions with inscriptions. Based on the sociological concept of inscriptions as representatives of social relations, and on the methods of statistical analysis of the corpus of inscriptions, the authors review the chronological range of inscriptions, geographical area and status representation of donators, which reflects a wide range of sustained scientific contacts with library specialists all over the country. The analysis of the content of the inscriptions and their emotional coloring confirms the authority and recognition of Yu. V. Grigoriev among the colleagues from the very first years of his professional activity in the library field, reveals the business and personal qualities of the scientist. In general, the collection of inscriptions addressed to Yu. V. Grigoriev demonstrates the specificity of his communicative space, uniting representatives of different-level status groups, i. e. students, colleagues, teachers and supervisors.