The Muscovite period Also, see ONLINE PRIMARY SOURCES
PORTALS, ONLINE DATABASES:
[Russian History before 1917] Information portal Russiahistory.ru
Testaments of the grand princes of Moscow, 14th - 16th Century. The texts are provided on the website of the History Department of Moscow State University.
[The Correspondence between Prince A. M. Kurbsky and Tsar Ivan the Terrible]. This online publication on the website of the Institute of Russian Literature (Pushkinsky Dom) includes introductory article, commentaries and free full texts (original version, modern Russian language translation and parallel texts).
Rerum Moscoviticarum Commentarii [Notes on Muscovite Affairs] is a Latin book written by Sigismund von Herberstein who visited Russia in 1517 and 1526. This fascinating book is the earliest detailed Western description of the land and people of Russia.
[Byzantium and Muscovite Rus]. By John Meyendorff; tr. of Byzantium and the Rise of Russia.
[Ivan the Terrible's letters] By D. S. Likhachev, Ya. S. Lurie. Free full text available on Historic.ru
[Muscovite Tsardom]. By G.V. Vernadsky. Free full text available on Kulichki.com
[Russian Culture, 13th - 15th Century. Material culture]. A very informative source offering many interesting articles. Full text available on Historic.ru
[The Third Rome] By R.G Skrynnikov (devoted to the the period of Ivan the Terrible's reign). Free full text available on Gumer.info
[Russia on the eve of the Time of Troubles] By R.G Skrynnikov. Free full text available on Gumer.info
[Boris Godunov]. By R.G Skrynnikov. Free full text available on Historic.ru
[Imposters in Russia in the beginning of the 17th Century] By R.G. Skrynnikov. Free full text available on Lib.rus.ec
[The language situation and language awareness in Muscovite Russia] From the book "Византия и Русь". Moscow, 1989. Full text available on Gumer.info
[Russian rouble, 16th-18th century] By V.O. Klyuchevsky. First published in Чтениe ОИДР, 1884. Free full text available on Az.lib.ru