The collection includes articles on the place of oral tradition and oral recollections among sources of knowledge, on the increasing role of this source in modern science, on the experience of its identification and study, accumulated in historiography, about the theoretical and methodological views of A. S. Lappo-Danilevsky, which were the last stage in the development of bourgeois source study, on the scientific use of the Trinity Chronicle before its death in the Moscow fire of 1812, about the history of all military horse censuses in Russia at the end of the XIX - beginning of the XX century. and others.