Free online digital library of media resources (video, interactive, audio, images) for classroom and teacher professional development. Many are OER (open educational resources).
Geared toward literacy. Provides books online. International section.
The Library of Congress. The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 120 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.
The Internet Public Library (IPL) features a searchable, subject-categorized directory of authoritative websites; links to online texts, newspapers, and magazines; and the Ask A Question online reference service.