Using people finders on the Internet made locating men in the group pretty straightforward. Finding the women, however, turned out to be a very different story because, in many instances, we don't know their married names or are not sure what states they live in. Nor do we have Social Security numbers for them. Finding someone who has already eluded your net may be tough, especially if professional investigative sources are not available to you. But there are a couple of longshots you can try.
Genealogy is a hot topic on the Internet.
Manufacturers of genealogy programs offer users of their software an opportunity to post family trees on the company Web sites. Independently, Internet users interested in genealogy often post their family histories on the Web. I'd browse around those sites, on the off chance that the women you are looking for are listed, under their maiden names, in someone's family tree. It could also be that some of the missing are online, participating in some of the Internet's tens of thousands of discussion groups. But rather than use the people finders some of those engines make available, search for the names as key words or phrases.