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"...The mission of Library Services is to develop qualitatively the Library's universal collections, which document the history and further the creativity of the American people and which record and contribute to the advancement of civilization and knowledge throughout the world, and to acquire, organize, provide access to, maintain, secure, and preserve these collections. ..."
"Carla Hayden was sworn in as the 14th Librarian of Congress on September 14, 2016. Hayden, the first woman and the first African American to lead the national library, was nominated to the position by President Barack Obama on February 24, 2016, and her nomination was confirmed by the U.S. Senate on July 13." Read more here