Books & Reading for People Who Are Blind or Visually Impaired

Connect with books and reading materials in formats accessible to people with blindness or visual impairments: braille, large print, recorded, and electronic.
A partnership of libraries and research institutions dedicated to the digital preservation of the cultural record. Public domain materials are freely accessible to all, using the home page's catalog-stye or full-text search. A User's Guide to HathiTrust is here (requires Adobe Acrobat Reader).
University of Pennsylvania
Use this search engine to find over 2,000,000 free digital books on the Web, which can be read with a screen reader or scanner program. 
Over 50,000 free full-text books whose copyrights have expired. Downloaded books can be read with a screen reader or scanner.
Nearly 400,000 books in accessible format for people of all ages all over the world. If you have a print disability, learn about eligibility and signing up here.
Search the NLS catalog of braille and audio books. This service is available for free to people with a visual or physical disability that prevents them from reading the printed page. Check your eligibility and apply here.

Web-Based Organizations and Internet Resources

Learning Ally (formerly Recording for the Blind & Dyslexic) serves students from kindergarten through college age. A nonprofit volunteer organization, Learning Ally makes textbooks and literature available to student who cannot read standard print because of visual impairment, dyslexia, or other physical disability.
Seedlings Braille Books for Children is a non-profit, tax-exempt organization dedicated to increasing the opportunity for literacy by providing high quality, low cost braille books for children.
The American Printing House for the Blind is the world's largest producer of books and products for people who are blind or visually impaired. Founded in 1858,  APH is the official supplier of educational materials for visually impaired K-12 students in the U.S.
A non-profit braille publisher, National Braille Press promotes the literacy of blind children through braille, and provides access to information that empowers blind people to actively engage in work, family, and community affairs.