http://thenewamerican.com/history/american/8351-when-marvel-comics-was-anti-communist

http://comicbooks.about.com/od/cultureofcomics/a/societyissues.htm

http://skullsinthestars.com/2010/02/13/captain-america-has-a-tradition-of-social-commentary/

http://www.americansc.org.uk/Online/Captain_America.htm

http://www.enotes.com/topic/Sgt._Fury_and_his_Howling_Commandos