Library of Congress

To preserve its collections, the library uses the full range of traditional methods of conservation and binding as well as newer technologies such as the deacidification of paper and the digitization of original materials. These measures include maintaining materials in the proper environment, ensuring the proper care and handling of the collections, and stabilizing fragile and rare materials by placing them in acid-free containers to protect them from further deterioration. Research on long-standing preservation problems is conducted by the library's Preservation Research and Testing Office.

The National Film Preservation Board, established by the National Film Preservation Act of 1992 (2 U.S.C.A. § 179b), serves as a public advisory group to the librarian of Congress. The board consists of 36 members and alternates representing many parts of the diverse U.S. film industry, archives, scholars, and others. As its primary mission, the board works to ensure the survival, conservation, and increased public availability of the U. S. film heritage. This mission includes advising the librarian on the annual selection of films to the National Film Registry and counseling the librarian on the development and implementation of the national film preservation plan.