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National Federation of the Blind

The National Federation of the Blind (NFB) is an organization of blind people in the United States. It is the oldest and largest organization led by blind people in the United States.

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John Lewis

Summary: John Lewis was an American politician and civil rights leader.

Library of Congress

The Library of Congress is the national library of the United States and one of the largest libraries in the world.

United States

The Wikipedia page on the United States provides a comprehensive overview of the country.