Its a treasure trove. I would also recommend you, and everyone else who hasn't already tried it, to go to the main part of the archive site (the 'archive' button at the top of the screen) and from there you can read every issue of flight magazine published from 1909 to 2004. Its wonderful!
it also has this refreshingly rare statement in the small print
100% FREE ACCESS – forever. In fact we're positively encouraging you to link to, copy and paste