SR-71 Online is more than just a web site: it bills itself as "An Online Aircraft Museum". It hosts hundreds of military aviation images, including over five hundred of the Lockheed Blackbirds. For you serious aviation geeks out there: it also boasts online images of every (available) page of the recently declassified SR-71 Flight Manual. No matter what your favorite flavor of Blackbird - A-12, YF-12, or SR-71 - there's a ton of info about it here!