The best plane photos of SFGAm are on http://maps.live.com (msn maps). There is a feature called "Bird's Eye View", where the photos are not from satalite images, but taken from planes. This way you can see the whole area (gurnee mills, key lime cove, etc.).
^ For those that work or have worked at the park, there is actually giant aerial photo's of the park for each season of operation throughout the backstage areas. I don't remember all the locations, but I know there is one in the Park Operations building, and one near the sign shop.
I don't remember where it was at, but on the one from 1980 (the year Demon opened), you could see that the entire line was full. This goes back to when the ride had 3 sets of queues along the 1st tunnel (where all the grass now is), and the line filled them all, and continued out to the midway.
^I remember seeing those photos when i worked at the park. Yeah, i remember when the demon was new and the lines were long with all the original queuing and theming. I was about 6 or 7 then and i remember being terrified of the demon back then, lol, brings back a lot of memories