James H. Freiberg, Books - Large selection of out of print, used, rare and antiquarian books in stock covering many fields and interests. Fiction, Non Fiction, History, Children's, and Cooking.
James S. Jaffe Rare Books - Specializing in rare books, literary first editions, private press books, illustrated books and poetry.
Janey's Used Romance Book Sale - Historical, contemporary, series, and paranormal romances. Prices are in UK pounds and U.S. dollars.
Jarndyce Nineteenth Century Booksellers - 18th and 19th Century English Literature, Social, Economic and Political History, Dickens first editions and Dickensiana. Based in London UK.
JB Books - Offers searchable database of new, used, and collectible antiquarian books.
Jeffrey Thomas - Americana, literature, fine printing, travel, illustrated books, and good books on all subjects.
John Drury Rare Books - Specializing in books dating from 1600 to 1900 with an emphasis in the humanities. Includes economics, education, law, philosophy and social history.
John Gach Books - Used books in Neuroscience, Philosophy, Psychiatry, Psychoanalysis, Psychology and Social Thought.
John Townsend - Second-hand books for sale on family history, British topography, antiquarian heraldry books, plus free specialist out-of-print book search.
Jonathan Sheppard Books - Genealogical and antiquarian resource for out-of-print books and map reprints.
Joslin Hall Rare Books - Curious, Unusual and Interesting Books of the 16th-20th Centuries.
Julian's Books - Specializing in rare and hard to find out of print books; first editions, signed/autographed books, limited editions, leatherbound books and sets.