Vladimir Lenin: The Founder of the Soviet Union
Britannica overview of Vladimir Lenin
Leninism
Alpha History - Vladimir Lenin
Index of Lenin's work
The difference between Lenin and Stalin
What books are out there? Check here
Stalinism
Joseph Stalin: The Red Terror
Alpha History - Joseph Stalin
Adapting to Russia’s changing approaches to its past: the Western historiography of Stalin and Stalinism by Ariane Galy (citation info here)
Alpha History - Leon Trotsky
Trotsky and His Interpreters; or, Will the Real Leon Trotsky Please Stand up? by Michael Cox
Encyclopedia of Trotskyism Online
Trotsky and the Bolsheviks [video]
Assessing Trotsky by John Marot
Women in the USSR
Bolsheviks and Feminists
Women Under Stalin
The Role of Women in Soviet Russia
Women before, during and after
Women and the Russian Revolution
How Women Lived Under Soviet Rule