Corbin Dallas is absolutely correct. Alpha Angels is not a sorority, but an auxilary (and a defunct one at that, theorectically) of Alpha Phi Alpha. I do understand that there are still active members and those members may have web sites, but I don't know the sites off hand.
www.blackplanet.com seems to have personal pages from folks who represent every type of organzation known to man, so maybe you can run into a former/current Alpha Angel and get what it is you're looking for.
Best, shela