Archive.org has about a bazillion things stored away. If you are looking for something specific, use their search box, as not all of their selections appear on the various pages when you bring them up.
Archive.org has thousands of albums/songs that are NOT listed on the regular pages, and you have to use their search engine to find them If you are looking for something specific, like say, Emerson, Lake & Palmer, Brain Salad Surgery, you have to do the search thing. Amazing what you can find on archive.org!! From the old TV episodes of Beverly Hillbillies to the old Bella Lugosi vampire flicks, they've got it. Music from the Blues to Acid Rock, they've got it. Best site I've ever found!!