The author examines the processing of A. S. Lappo-Danilevsky’s personal library after its inclusion into RASL from start to finish, as well as the applied methods and distribution of copies by various RASL collections. For this propose, the author analyzes the library records and the attributes revealed through direct search and de visu browsing, in particular, provenance attributes, markings and labels, and specifies their logics. The author concludes that the personal library was not inventoried or classified. The ownership’s stamp belongs to the collection RASL provenance. The stamp and the technical markings evidence on the unsystematic processing, the markings appear not in every copy. With lacking general survey of the scholar’s collection, these parameters and attributes are of no less significance than the similarly unevenly distributed key ownership attributes (super ex libris, autographs), therefore they are intensively used for the study proposes.