I'm not sure if they have the dates on the older maps but open the map up and look to the lower right hand corner, it should have a date on it. At least I'm assuming it's the date, mine says 10/07
I have been visiting Disneyworld since 1991. I have saved the guidemaps from each of our trips. These guidemaps got mixed up with each other during a move and I am wondering if there is a site that I could use to identify what year I got these guidemaps in.
If anyone knows of a site please let me know. I truly appreciate this.
You can always call Disney's Guest Services... they may even have old copies of guidebooks to fill any missing in your collection.
This may help:
GMDB | Walt Disney World Guidemap Database
It's a database of everything about disney guide maps... you should find anything you're looking for on there.