A short while back some guy claimed to have a great 1992 facepack but it turned out to be a joke and nothing was ever posted. However I have found a link with some decent photo packs at both:
http://baseballsimcentral.com/dloads...led/2590.shtml
and
http://baseballsimcentral.com/dloads..._4/Face_Packs/
At the second link just download the 80s photopacks. I find that many of those players still are playing in the 90s. Also downloading a "current" photo pack will also get you quite a few players who were active in the 90s.
Good luck!