Entertainment Weekly posted the link to this on their PopWatch blog. It was made by a Virginia engineer named Jonah Adkins. The maps and information incorporate details from the show and from The Lost Experience online game (which I've never played.)
I don't know how canonical the information on the map is, but one thing's for sure, the map is BIG. Also, pretty neat. I wish I had a printer that could print this thing out full blown in color so I could hang it on my wall, step back, and stare at it for a while.
NEW ADDS FOR THIS WEEK Ain't In It For My Health: A Film About Levon Helm (The W at Amazon) (2010) DVD/BD coming in October (digital purchase) (8/2) Ain't In It For My Health: A Film About Levon Helm [HD] (digital purchase) (8/2)