EN
The article reviews the new findings in recent years of the most valuable and rare instances of Cyrillic Slavic and Russian old printed books, beginning with the XVth century books, but mainly of the XVIth century. The «geography» of the reviewed editions is quite wide, with the exception of samples printed in Wallachia. Basically we are talking about the Russian private collections that the author managed to examine in the course of archaeographical research and expeditions. All the books mentioned in the article are of high historical and cultural value, some of them absolutely unique to date.