My buddy Sam Smith hipped me to this fantastic online collection of theme park maps. Pileup blog devotees know what a huge fan I am of theme park maps, so that I really enjoy this website should come as no surprise. Here are a few highlights...
Click each image for a larger view
Great Adventure, 1974
Walt Disney World, 1979
Busch Gardens Old Country, 1976
Six Flags Great Adventure, 1980
Check out the Theme Park Maps website for much more.