[Ron Wood]

This is illuminating the obvious for most of you guys, but I thought I would post it for the sake of some of the new folks who are not familiar with rare books.

Changes, corrections and notes should not be made in the book itself! Keep them on separate sheets that you can place at the appropriate pages or at the front or back of the book. This may be a bit more inconvenient, but it preserves the condition of the book. Also, if you are going to put them between the pages of the book, do not use a transferable ink, i.e. blue ball point.

I cringe when I find a really scarce reference only to discover it has been ruined by highlighting or marked up with underlining or marginalia. Even pencil markings are a no-no, they just never can be completely removed. Be careful with post-it notes. On some papers, if left for a long period of time, they can leave a residue that attracts dirt and stains.

Remember that you (or your heirs) may one day want to pass this book on to someone else, and probably at a considerable premium over its original cost.