So, here's the dilemma -- you've looked for a classmate to join the facebook group and they haven't. You've checked the Memorials page -- the person isn't listed there either. You'd really like for this person to know about the class website and you'd like to contact them, but where to start?
Right here! Put in your message everything you know about the person -- married names, locations lived, family members (kids, spouses), profession, college, etc. We'll try to figure out where they are and invite them to the group. We'll also let them know your name and contact information if you provide it to us in this form. Then, they will have it on their shoulders to contact you. This protects their anonymity if they desire it.