The largest library in the United States, located in Washington, D.C., and maintained largely by federal appropriations. Its original purpose was to provide research facilities for members of Congress; today it serves the public as well.

The Library of Congress

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The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the de facto national library of the United States.

Location: Washington, D.C., U.S.

Established: April 24, 1800; 217 years ago

Staff: 3,224
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