ENCYCLOPEDIAS and Overviews
Encyclopedia of Russian History. (Ref. DK 14 .E53 2004) 4 vols.
Encyclopedia of Russian History
Encyclopedia of Russian History. (Ref. DK 36 .P39 1993) This book is less an encyclopedia and more of a dictionary.
The Blackwell Encyclopedia of the Russian Revolution. (Ref. DK 265 .B54 1994)
Encyclopedia of Eastern Europe. (Ref. DJK 6 .E53 2000)
The Cambridge Encyclopedia of Russia and the Former Soviet Union . (Ref. DK 14 .C35 1994)
Slavonic Encyclopaedia. (Ref. D 377 .S58 1969) Four volumes. Entries are scholarly and the scope is the entire Slavic world.
The Former Soviet Union's Diverse Peoples: A Reference Sourcebook
Wikipedia History of Russia
DICTIONARIES
Dictionary of Russian Historical Terms from the Eleventh Century to 1917. (Ref. DK 36 .P 78 1970)
Dictionary of the Russian Revolution. (Ref. DK 265 .D49 1989)
Country Information
A Country Study: Russia
CIA World Factbook
ATLASES
Cultural Atlas of Russia. (Ref. DK 32 .M62 1998)
Atlas of Russian History. (Ref. G 2111 .S1 G52 1993)
COMPANIONS (useful for dates, occupants of various offices and treaties; organized by broad topics like Internal politics or Nationalities)
Longman Companion to Imperial Russia, 1689-1917 . (Ref. DK 113 .L66 2000)
Longman Companion to Russia since 1914. (Ref. DK 266 .M 353 1998)
CHRONOLOGIES
Great Dates in Russian and Soviet History. (Ref. DK 36 .G74 1994)