Yes alot of NASSP 7 snapshots are there of course, AND even NASSP 6.4.3 are able to be found, however, I didn't see NASSP 5.x there, or NASSP 4.x or NASSP 3.x.
By the way the specific location to previous beta releases of NASSP 7 and other important files are located here.
BUT YES... from what...