Best "Archival" glue?

[SkiDragon]

I was wondering what is the best type of glue to use when repairing and "resticking" labels. I currently use Elmer's because I figure that horse parts would be less damaging to a label than chemicals, but I could be completely wrong. I dont want my games to look like Activision titles in ten years, so if anybody has any suggesstions, please share.

[Dr. Morbis]

I don't know what the official "world's greatest archival glue" is, but if you make sure that whatever you use clearly states on the label that it is "Acid Free" you should be okay.