Those are some good finds D O, I like looking at the tapes because it reminds me of good memories of life from that time like listening to alot of college hip hop radio and traveling.
Those 3 albums all have some overlooked music on 'em, especially Nine, I wonder what happened to him? Lifecheck by Mic Geronimo was always pretty ill to me, classic Beatminerz, and Masta I.C. is one of Buckwild's crown jewels in his production catalog.
Lookin at that Cella Dwellas reminds me of the promo cassette for that album which I lost years ago, it had a dark cardboard paper cover and some unreleased songs from the album. I still have a copy on mp3 fortunately.
I think you should start taking pics of the actual visits and store locations you go to when buying you're tapes, sort of like the photo docs of DJ Shadow. Those are always interesting to me, it's a good way to store those digging memories too. Here's a Japanese record store blog that does it:
Soul Clap Records Japan