The first volume presents the monograph "Old Russian Legends and Tales of the Time of Troubles of the 17th Century as a Historical Source" (now assessed by historians and literary critics as a classic work), as well as the first published final student essay "Moscow Zemstvo Cathedrals of the 16th and 17th centuries" and the abstract "Boyar Duma in the Moscow State according to the study of N. Zagoskin." The publication was prepared by the Archaeographic Commission of the Russian Academy of Sciences together with the Manuscript Department of the Russian National Library based on materials from the personal archival fund of Academician S.F. Platonov.