Guide To Rare Book Values
- Auction prices for over 35,000 collectible and rare books, auction selling tips, autograph gallery, glossary, and links.
- http://www.fadedgiant.net/default.htm

Antiquarian Book Values
- An article offering assistance on determining the value of old and rare books.
- http://www.djmcadam.com/book-values.html

American Book Prices Current
- An annual record of books, manuscripts, autographs, maps and broadsides sold at auction.
- http://www.bookpricescurrent.com/