Yep, he was also selling other HIStory tracks like Evil Eye, Revenge and some others. None of them have vocals though.
Let me take inventory for a second:
All of them are DAT tapes. Every description I give should not be taken as gospel, but rather a guesstimation of what's on the tapes. Order goes from bottom to top.
1. In the Closet - what I assume to be a reference DAT.
2. Too Bad Mix 8 - an alternate mix of 2Bad that may or may not have been used in the album.
3. This Time Around - Think it might be a session mixdown. May or may not have Biggie vocals.
4. Too Bad - Another session mixdown, probably.
5. Too Bad SSL Mix - dated March 20th, 1995.
6-7, 9, and 20. Four copies of Ask Rene 3 - possibly an unused idea for a new song. Michael most likely titled it that so Bruce Swedien. can...well...ask Rene Moore for his opinion on the groove.
8. In The Closet Caliope Mixes - mixes for ITC's video version, the one with the caliope solo in the end.
10. In The Closet Edits - edits made for the single and video versions.
11. This Time Around - A different mixdown, possibly.
12. Revenge - An unused idea for a new song.
13. Revenge Mix 2 - A different mix of the above tape.
14. Ask DD - Unknown. Dated April 8th, 1992.
15. The Best Thing - An unused idea for a new song.
16. This Time Around - Another mixdown of the song.
17. HIStory - Most likely a different mix.
18. Family Thing - An instrumental version of the song. Most likely used for MJ to review before adding his vocals.
19. "Michael Jackson" - Probably a song or perhaps some studio talk, or maybe just an untitled mix of either one of the unused ideas or a song from HIStory.
21. Ask Rene 3 Experimental Edit Mix - An edit and mix of AR3.
22. Rene and Loren - Most likely an unused song idea blocked out between Rene Moore and Bryan Loren.
23. Session DAT With Shaq - A mixdown of 2Bad with Shaquille O'Neal's rap added. Most likely taken from the session where he added his vocals.