Valley Braille, Inc. - Transcriber of books, menus, sheet music, maps and math. Also offers a large inventory of Braille publications. - http://www.valleybraille.com/
Braille Bookstore - Large selection of books for children and adults. Also offers quick reference cheatsheets. - http://www.braillebookstore.com/
Seedlings Braille Books for Children - Offers childrens books. Includes information on special projects, FAQs and related resources. - http://www.seedlings.org/