Mark Roosa is Director for Preservation at the Library of Congress, where he directs the work of some 200 staffers in the Preservation Directorate, which consists of five divisions -- Conservation, Binding and Collections Care, Preservation Research and Testing, Preservation Reformatting, and Photoduplication Service -- as well as the Mass Deacidification Program and the U.S. Newspaper Program. Mr. Roosa also is responsible for coordinating the digital preservation program. Prior to coming to the Library of Congress in 1998, Mr. Roosa was the Lloyd E. Cotsen Chief Preservation Officer at the Huntington Library, Art Collections, and Botanical Gardens in San Marino, California, where for seven years he directed a comprehensive preservation program for a collection of books and manuscripts pertaining to English and American History and Literature, the History of Science, and Western Americana. Prior to that, Mr. Roosa was Preservation Officer at the University of Delaware Library, where he built and managed a use-driven preservation program for a collection of 1.5 million items.

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