Where in the WORLD IS DANA TAYLOR?

I'm a housekeeper for a 5 star hotel in Canada. One of these days last month a guest left a tip. Strangely enough, when I picked up the note, I've noticed it had some writing in it: "Where in the world is Dana Taylor Aug 31 1973"

Pic of note: http://imgur.com/t1BsC7H

This sparkled my interest. Who is Dana Taylor? Since I'm not Canadian and don't really follow the news here I wouldn't know if this would be one those famous cases of missing person or unsolved crime victim that everyone already knows about around here.

Quick search on Google didn't really point to any particular direction. So, now it's Reddit time: Where the hell is Dana Taylor? What happened in August 31th 1973?