I don't unfortunately, but it looks like there were some changes in the group members after their "peak" period. I believe all of the individual group members are listed in this article, and you could likely Google their respective names to find out what they've done subsequently:
http://www.vocalgroup.org/inductees/...cosiation.html
Also, they're apparently still around, though in a different incarnation than the original line up:
http://www.theassociationwebsite.com/
Best,
- Mike