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Books and other materials in libraries worldwide.  

Statistics compiled by the U.S. Federal Government.

The accepted authority on the English language, containing the meaning, history, and usage of 500,000 words and phrases across the English-speaking world.

Chemical compound properties, structures, and reactions, with references to chemistry journal and patent literature.

Indexes digitized recordings, documentaries, and interviews related to American music, as well as global contemporary, classical, and jazz music.

FBI files on political organizations, activism, and domestic surveillance in the 20th century. Topics include anti-communism, militia movements, civil unrest, and government investigations.

Indexes key journals from many different disciplines.  Contains significant full text of scholarly and popular journal articles and book reviews.

American Chemical Society publications.

Indexes newspapers owned and operated by African Americans from more than 35 US States.

Indexes over 170 periodicals by and about African Americans.  Includes academic and political journals, commercial magazines, institutional newsletters, bulletins, annual reports and other genres.