D & D Galleries  
   Rare and antiquarian bookdealers; specialties are British and American literature, from the 16th through the 20th centuries.
   http://www.dndgalleries.com/

David White Books  
   Antiquarian and out-of-print medical books specializing in the history of medicine and pharmacy.
   http://freespace.virgin.net/david.white23/

David M. Lesser  
   Fine Antiquarian Books. Specializing in Americana.
   http://www.lesserbooks.com/

Doc Baker's  
   Rare and used books, plus ancient artifacts and coins.
   http://members.aol.com/mpbphd/index.html

Dawson's Book Shop  
   Specialties include books about books, Californiana, photography, printing history, Western Americana.
   http://www.dawsonbooks.com/

Dolphin Books and Prints  
   Rare and out of print books, maps and prints; purchase by email or telephone.
   http://www.dolphin-book.com/

David Eves Books  
   Antiquarian, rare, out of print, first editions and signed books.
   http://www.davidevesbooks.com/

Dickinson Books  
   Antiquarian and out-of-print books.
   http://dickinsonbooks.gq.nu/

Dusty Books  
   Second hand book shop. Categories include fishing, gardening, food, wine, cookery, literature and fiction.
   http://www.dustybooks.co.uk/

Dickens Alley  
   Rare books, collectable art and antiques. Specializing in Colorado authors and artists; poetry, paintings, first editions and author signed books.
   http://www.dickensalley.com/

Duobooks & Fine Arts  
   Illustrated, literature and limited edition books; contemporary signed prints, photography and posters; signed modern first and exhibition catalogues.
   http://hometown.aol.com/duobooks/myhomepage/business.html

Dov Used Book Shoppe  
   Used books displayed under many category headings.
   http://www.dovbooks.com/

Dee Why Books  
   Second hand and antiquarian books
   http://www.deewhybooks.com.au/

Dusty Old Books  
   Old and antiquarian books, specialties include medical, veterinary, pharmacy, and travel, photographs of all books.
   http://www.dustyoldbooks.com/

Dandy Lion Editions  
   Used, secondhand, out of print, scholarly and collectable books for sale. May open multiple browser windows.
   http://www.dandylioneditions.co.uk/

The Dust Jacket  
   Rare and collectible books. Specializing in medical, Texana and fiction first editions. Book search available.
   http://thedustjacket.biz/

De Friedesche Molen  
   Specializes in 19th century Dutch literature, scientific and medical books. Based in Amsterdam.
   http://www.friedeschemolen.nl/

Dailey Rare Books  
   Including illustrated books, early printing, medicine, alchemy, bibliography, graphic arts.
   http://www.daileyrarebooks.com/