I couldn't say for sure but it seems that most were impossible. But, to my mind the best way to get to the bottom of these passenger list and phone call issues is for somebody to start doing some leg work up in the north east area and track some family members down and interview them. I think Greg Symanski has tried to do this - and apparently Ellen Mariani was trying to track them down with very little success. Trying to think where I read about that- but that would seem to be somethng worth following up on - I mean the official passenger lists give the home towns of many victims - small towns in Massachusets (sp) for example - should be fairly easy to pin point many of them.