(courtesy of medinfo)
The full text articles of all online journals from the American Heart Association are now available back to their respective first issues. The AHA journals require a subscription to get the full text of and article within the current year, but back issues are freely available.

• Arteriosclerosis, Thrombosis, and Vascular Biology goes back to 1981
• Circulation goes back to 1950
• Circulation Research goes back to 1953
• Hypertension goes back to 1979
• Stroke goes back to 1970

I guess I am a little bit of a geek because I always get a little excited about seeing free back files become available. Perhaps I need to get out more often.