Code of Federal RegulationsThe Code of Federal Regulations (CFR) is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.
Homeland Security Digital LibraryThe U.S. Dept. of Homeland Security's Digital Library includes full text material from a variety of Federal, State, international and private sources related to security policy, strategy and management. Content is primarily current, but some historical material is included.
National Science Digital LibraryNation's online library for education, and research in science, technology, engineering and mathematics. Most content is free.
Gale General ScienceA collection of over 1,000 peer-reviewed journals, providing researchers with the information needed to stay current on the latest scientific developments.