Rare Photobooks
- Photobooks, including important works from the nineteenth century to the present. United Kingdom.
- http://www.rarephotobooks.com/

Rufoustowhee Books
- Specializes in mysteries. Categorized listing shows available quantities in each genre.
- http://www.rufoustowhee.com/

Red Sky Books
- Used and out-of-print books, including African art, craft, magic, music, and Broadside magazines.
- http://www.redskybooks.net/

Readers' Paradise
- Bookstore features out-of-print books and rare books published by small presses and regional publishers.
- http://readersparadise.com/

Rare Book Cellar
- Search or browse an inventory of hard to find, out of print, used, and rare books.
- http://www.rarebookcellar.com/

ReBook
- Rare, used and out of print books, specializing in children's books. Includes international book search service.
- http://www.rebookonlinebooks.com/

Robert Wright Books
- Antiquarian and fine books. Specialties include the pre-Raphaelites, John Ruskin, nineteenth and twentieth century literary first editions, Canadian literature, cinema.
- http://www.robertwrightbooks.com/

Ron Lieberman, Antiquarian Bookseller
- Fine and rare books; large inventory all on one page.
- http://www.sellbooks.net/

Robert Gavora
- Fine and Rare Books, specializing in railroad history and technology, science fiction, fantasy, horror, western Americana, mystery, and stocks of general fiction and nonfiction.
- http://home.teleport.com/~rgavora/

Reading Well, Ltd.
- Includes online inventory of rare and used books.
- http://www.reading-well.com/

Rereadables
- Murder, mystery, science fiction, romance and over 19 categories.
- http://www.rereadables.com/

R S Geer Books
- Rare, scarce and out-of-print books bought and sold; specializing in mysteries and novels from the late 1800s and early 1900s.
- http://www.rsgeerbooks.com/

Ridiculous Book Store
- New and used books of all kinds. Pseudonym lookup function, downloadable catalogs, free book searches, open forums.
- http://www.trbsi.com/

Randall House
- Rare and collectible books; strong in Western Americana, fine press and printing, 19th and 20th century literature.
- http://www.randallhouserarebooks.com/

Rare Books in Japan
- Western and Japanese rare and antiquarian books bought, sold and exchanged.
- http://rarebooksinjapan.com/

RiverRun Books
- Used and rare books, including literary fiction, poetry, and non-fiction.
- http://www.riverrunbooks.com/

Rose's Books
- Rare and out of print books, children's and illustrated books as well as general stock.
- http://www.rosesbooks.com/

Rosenbad Antique Books
- Antiquarian books, rare books, literature, science, books in russian, english and french, listed by subject.
- http://www.rosenbadantiquebooks.com/

Richard B. Arkway
- Books, antique maps, atlases, and globes.
- http://www.arkway.com/

Robert Downie Fine Books
- Principal interest in theology, economics, science, history and classics.
- http://www.booksets.com/

Robert Frew
- Antiquarian books, maps and prints; based in London, UK.
- http://www.robertfrew.com/

Reid and Wright
- Consortium of book dealers in Connecticut, specializing in rare and out of print maps, prints and architectural books.
- http://reidbook.com/

Reed Orenstein Rare Books
- Specializing in books illustrated by Maurice Sendak, juvenile series books, Modern Firsts, science fiction, illustrated art books.
- http://www.reedrarebooks.com/

Red House Books
- Out-of-print books on subjects like social movements of the 1960s, the Beat Generation, and first editions by modern authors.
- http://www.redhousebooks.com/

Ray Boas Bookseller
- Specialties include: business, financial histories and biographies, and the decorative.
- http://www.rayboasbookseller.com/

Ravenroost Books
- Used, rare, hard-to-find books in sciences, natural sciences, medicine, botany, non-fiction, literature.
- http://www.ravenroostbooks.com/

Rarity Of The Day
- Rare books, listed by title, author and description.
- http://www.netrax.net/~rarebook/