Newport Book Store  
   Fine, new and rare books, specializing in Americana, military history, intelligence and espionage, with an emphasis on the American Revolution.
   http://www.nptbooks.com/

Noonan's Books  
   First editions and rare books.
   http://www.noonansbooks.com/

Netsifters  
   Antique, old, first edition, author inscribed, rare, limited edition, scarce, small press, out of print, remainders, and used books organized into many categories.
   http://home.earthlink.net/~netsifters/

Naomi Symes  
   Books on social history and women's history; out-of-print, antiquarian and in-print titles.
   http://www.naomisymes.com/

No Garbage Books  
   Includes a search feature, links to other book sites, and local history.
   http://www.nogarbagebooks.com/

NBMF  
   Used books, including simple living, religion and spirituality, health, and biography.
   http://www.oldbooks.bigstep.com/

Napier Books  
   Used, rare and out of print books specializing in military, philosophy, history and business.
   http://www.amazon.com/shops/napierbooks/

Nudelman Rare Books  
   English and American Literature, Art Nouveau, Children's books, Victorian and Pre-Raphaelite rare books. Requires acrobat reader.
   http://www.nudelmanbooks.com/

Northshire Bookstore  
   Collectible, rare, and used books. Includes an area for search.
   http://northshire.com/