The purpose of the article is to demonstrate, using a specific example, the role of information exchange between collectors in the process of forming private and public collections of monuments of book and documentary writing. Collecting is a multi-stage process. The acquisition of a written monument is preceded by a preparatory stage, which includes the search for the monument, negotiations with the owner on the terms of sale or transfer. The success mainly depends on collector’s awareness of the availability and location of the monument, therefore the correspondent network, through which relevant information is shared and, sometimes, negotiations with the owner take place, plays a particularly important role in this process. As a result, the conclusion has been made, that public and private collectors may use the same sources of acquisitions, correspondent networks, and channels for collecting and disseminating information about literary monuments. The final stage in the assignment of a monument to a particular collection is the decisive one, determined by the collector's personal interest, financial and administrative resources, and sometimes a combination of circumstances. All these stages and mechanisms are clearly illustrated by N. P. Rumyantsev’s attempt to acquire a 14th-century parchment document. During the research, the location of the original document has been established, included as a part of a private collection in the major state collection.
