I have a home-made three ring organizer that I've toted for years that has about three times the information in it, not in any real order, just countless names, numbers, and titles, many of which are out of date or obsolete. I add more to the list as time goes by, and I can probably figure out fairly easily which ones I would use for what, but for anyone else, they may just as well pick up a 3 year old phone book.