Federation of American Scientists
Fas: Cuban Missile Crisis
This site from the Federation of American Scientists has lots of photos regarding the Cuban Missile Crisis, as well as Foreign Relations Documents.
George Washington University
National Security Administration: Cuban Missile Crisis
This is from the National Security Administration's Website. It has information on the operations involved in the Cuban Missile Crisis. Difficult for an Elementary student to understand, but a great resource for Elementary teachers.
Oswego City School District
Regents Exam Prep Center: Communism
This site explains the history of communism throughout the world. Looks at the principles of Marxism and communism, Karl Marx, and major communist political victories around the world.