Ampersand Books - British dealership which buys, sells, repairs, and researches pop-ups, movables, dimensional, interactive and children's novelty books. Ships internationally. Mail order only. - http://www.ampersandbooks.co.uk/
Kidz Books - British sellers of second-hand children's books. Site also features games, polls and puzzles. - http://www.206enterprises.co.uk/kidzbooks/
Windy Hill Books - Out of print and collectible children's books. - http://www.windyhillbooks.com/
Cellar Door Books - Specializes in the works of Tasha Tudor; includes prints, cards, and original art. - http://www.theworldoftashatudor.com/cgi-bin/cellardoor/index.html
Neil Williams, Bookseller - Specializes in children's and illustrated books. - http://www.williamsbooks.com/
100 Aker Books - Used and out-of-print books. Specializes in children's books; also holds humor, biographies, and entertainment. - http://bigwebpages.com/members/100akerbooks/
ArchBooks - Collectible, rare and out-of-print children's and illustrated books. Registration required. - http://www.archbooks.com/
March House Books - Illustrated and general children's books. Rare and out of print books - newer books, magazines, comics and ephemera. - http://www.marchhousebooks.com/
Childhood Books - Specializing in out-of-print, used and other hard-to-find children and juvenile books. - http://www.childhoodbooks.com/
Topsy Turvy Children's Books - A pair of British collectors who buy and sell used children's books. They ship internationally. Condition of all books is graded. (Email orders only.) - http://www.topsyturvychildrensbooks.co.uk/
Stella & Rose's Books - Specialists in rare and out of print children's and illustrated books. - http://www.stellabooks.com/
The Reading Well - Used, rare and out-of print books. Condition of all books is graded. (Email orders only.) - http://www.readingwell.com/
Purple House Press - Offering reissued publications of books from the 1940s-1960s. - http://www.purplehousepress.com/
The Happy Hollisters by Jerry West - Information on the Happy Hollister 33 book series, its publisher and writers. Books are also available for sale. - http://www.happyhollisters.com/
ElephantBooks.com - A primary source for out-of-print, rare, and used children's books in stock. Shipping is promised within 24 hours. - http://www.elephantbooks.com/
The Book Safari - Popular series books dating back to the 1930's. Condition of books is graded and described in detail. Most covers are pictured. They also buy and trade books. (Phone and e-mail orders only.) - http://www.seriesbooks.com/
Aleph-Bet Books - Collectible and rare children's and illustrated books. - http://www.alephbet.com/
Only Nancy Drew - Vintage Nancy Drew books, memorabilia and information. - http://www.onlynancydrew.com/
Kineton Books - Collectible children's books; many with scannned view. Minimum purchase requirement. - http://www.kinetonbooks.co.uk/
Cathy's Book Corner - Juvenile series, classics, illustrated, picture, golden, early readers and school texts, fantasy, folklore, pop-up books. - http://cathysbookcorner.com/
Children's Bookshop - Specialists in children's used books for children, collectors and researchers. - http://www.childrensbookshop.com/