Chris, I wish you well in finding the bag. Did you go through the old routine of when you had it last, who were you with, what vehicle? Perhaps somewhere else in garage or house?
Hope you find your stuff. Tragedy may be a little overstating things though. I opened this thread thinking OMG who passed or got sick or injured and was actually thankfull it was just a plug bag missing. Granted it's a classic collection and all. I really do hope you find it though. Were you fishing alone? I'm sure you've gone through it over and over again and that is sure to make you sick. Good luck. and I'm really sorry.
Count back, when did you last use it. I imagine you've gone down that road but it might be worth shouting out so some people can look. Any chance someone is screwing with you? It probably is gone though.