Correspondence of Ivan the Terrible with Andrei Kurbski in the Development of Political Communication
Foreign Policy Issues of the Correspondence of Frederick II in English-Speaking Historiography of the Turn of the 19th and 20th Centuries
Correspondence between A.N. Popov and E.A. Sverbeeva as a Source of Reconstruction of Everyday Life of the Moscow Slavophiles of the 40-50s of the XIX Century
