History Reference Center

Designed for secondary schools, public libraries, and undergraduate research, this database features full-text for more than 1,990 reference books, encyclopedias and non-fiction books.

Illinois Digital Archives

The Illinois Digital Archives is a repository for the digital collections of libraries, museums, historical societies, and other cultural institutions in Illinois.

The Library of Congress

Provides access to more than 151 million items including more than 34.5 million cataloged books and other print materials in 470 languages; also includes the world's largest collection of legal materials, films, maps, sheet music and sound recordings.

National Archives & Records Administration (NARA)

The nation's record keeper. It's major holdings go back to 1775 and include the Declaration of Independence, the U.S. Constitution, the Bill of Rights, and the Louisiana Purchase Treaty among others.

The Smithsonian Institution

The world's largest museum and research complex, consisting of 19 museums and galleries, the National Zoological Park, and includes online access to extensive digital collections.