Websites:
https://www.profesorfrancisco.es/2009/11/guerra-fria.html
https://www.jfklibrary.org/learn/about-jfk/jfk-in-history/the-cold-war
https://avalon.law.yale.edu/subject_menus/coldwar.asp
https://nsarchive2.gwu.edu/
Also use the Aula Virtual....The document "TEMA 11 ILUSTRADO" is very useful for this task!!!