At 03:25 PM 12/29/99 -0500, John B asked: I'm sure that it has the same problems as regular paper including the fact that it has acid residues in it that will cause it self-destruct even in a vacuum. I expect that it needs to be preserved the same as most other paper including being being treated to neutralize the acid. I once meet someone that preserved books for the Smithsonian or one of the other big librarys. He told me that the acid neutralization was done with a zinc compound and in a huge pressure chamber. He also said that the treatment took about six months! I wish I had gotten more details but hind-sight is always 20-20. Joe