New York Times

New York Times
Originally uploaded by barbfecteau.

This is absolutely invaluable for researching any historical or literary topic post-1851. The search engine allows you to have results listed in chronological order so you can watch the progression of your topic as it hits the consciousness of the world via the world’s premiere English language newspaper. Take that, London Times… The index is free, but articles cost $2.95 apiece. (But not really, see next entry!)