Seventeen Moments in Soviet History: an Online Archive of Primary Sources

David Korfhage just tweeted this excellent site on Soviet history. The caption for the poster above is "Throw the Kulaks out of the Kolkhozes!" The site is organized by year. Click on 1929 and you'll find short essays, primary sources, and photographs like the one above about collectivization. You do not have to register for much of the material but  you do for access to primary materials and photographs, but that registration is free.  You can view the material by year or by theme.