Book Conservation

Two things:

1. Keep it dry.
2. Keep it out of the sun

Those two elements are killers when it comes to preserving old books. Moisture will do permanent damage, either through the development of damp-stain or mold. If you have a moldy book the best solution is to get rid of it although there are a few products that might help.

If the book has a dust jacket, protect it with a mylar cover to preserve it as long as possible. A dust jacket can account for a major portion of the value of an old book.