2018 marks the 50th anniversary of the Prague Spring, a period of political liberalization in Czechoslovakia during the era of its domination by the Soviet Union. In August 1968 tanks were sent in to crush it.
Here are some resources to find out more:
•The Prague Spring 50 Years After: Great Crises of Communist Régimes in Central Europe in a Transnational Perspective- International Conference- papers available via YouTube channel
•USD Institute International History also has some themed pages with chronologies and documents in Czech.
•University of Nebraska Lincoln held a Prague spring at 50 conference . some of the presentations are on their YouTube channel
- Crisis in Czechoslovakia: DODIS – Diplomatic Documents of Switzerland. 1848-1975 materials from the Swiss federal Archives.
- EurDocs has links to primary source materials by and covering Czechoslovakia it includes some Czech language materials including government and resistance form the Cold War period which might be worth exploring.
- Marxist Internet Archive has accounts from dissidents. and contemporary analyses
- Prague Spring Archive project—a collaboration between the University of Texas at Austin and the Center for Russian East European, and Eurasian Studies (CREEES), using materials from the
- Lyndon B. Johnson Presidential Library gives the perspective of the Americans on events. It includes timelines and documents.
- Cold War International History Project Wilson Center has some analysis
- The digital archive also has primary source materials on the Soviet invasion of Czechoslavakia