Feel free to make a list of recommended books (both those online and offline) on a particular subject here. I'll start with a modest list: Soviet History up to 1953 * History of the Communist Party of the Soviet Union (Bolsheviks): Short Course by J.V. Stalin * A History of the U.S.S.R. by Andrew Rothstein * The New Soviet Constitution: A Study in Socialist Democracy and The Stalin Era both by Anna Louise Strong * The Social and State Structure of the U.S.S.R. by V. Karpinsky * Soviet Economic Development since 1917 by Maurice Dobb * Soviet Democracy by Pat Sloan Trotskyism * Soviet Policy and Its Critics by J.R. Campbell * Trotskyism: Counter-Revolution in Disguise by M.J. Olgin Molotov-Ribbentrop Pact * The Soviet Union and the Struggle for Collective Security in Europe, 1933-39 by Jonathan Haslam * In Our Time: The Chamberlain-Hitler Collusion by Clement Leibovitz * The Munich Conspiracy by Andrew Rothstein * The Unholy Alliance: Stalin's Pact with Hitler and The Soviet Union and the Origins of the Second World War both by Geoffrey Roberts Collectivization * The Best Sons of the Fatherland: Workers in the Vanguard of Soviet Collectivization by Lynne Viola * The Socialist Offensive: The Collectivisation of Soviet Agriculture, 1929-1930 by R.W. Davies The Great Purges * Origins of the Great Purges: The Soviet Communist Party Reconsidered, 1933-1938 by J. Arch Getty * Life and Terror in Stalin's Russia, 1934-1941 by Robert Thurston Ukrainian Famine * Fraud, Famine and Fascism: The Ukrainian Genocide Myth from Hitler to Harvard by Douglas Tottle * The Years of Hunger: Soviet Agriculture, 1931-1933 by R.W. Davies and Stephen G. Wheatcroft Albania * History of the Party of Labour of Albania * The History of the Socialist Construction of Albania by Luan Omari and Stefanaq Pollo * A Coming of Age: Albania under Enver Hoxha by James S. O'Donnell * Socialist Albania since 1944: Domestic and Foreign Developments by Peter R. Prifti
