Pre-recorded Reel-to Reel tapes


About 30 years ago, I had a nice 4 channel Reel-to Reel tape machine. I think that was the best fidelity I've ever heard. I have researched a little, but haven't found many pre-recorded tapes available. I guess it's almost like searching for 78 records. I'm loving my vinyl, but wish I could find a place that offered many titles of tapes. Is there such a place?
handymann
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I have most of The Tape Project tapes plus a few dozen other Safety Master tapes, you haven't analog at it's best until you hear one of these tapes!!!
I just bought a 4 track stereo TEAC A-3300SX, and am starting to assemble a collection of pre-recorded tapes. With the first, “Best of Cream” at 3-3/4 IPS I was thrilled to hear those favourites like “Badge”, “White Room”, “I Feel Free” and “SWLABR” with bigger, fuller and richer sound for the first time all over again. “Days of Future Passed” at 3-3/4 is on its way, and I can’t wait. Looking for other landmark classic Rock pre-recorded releases like “Strange Days” and Zeppelin IV. Also looking for some recommendations. 
For whatever it’s worth, Amoeba Music stocks every format of tape except open reel. Go figure.