The Library of Congress is among a dozen federal agencies launching an initiative to establish a common set of guidelines for digitizing historical materials. Basing its efforts on a combination of collaborative research and combined experience, the Federal Agencies Digitization Guidelines Initiative will address a variety of issues related to the complex activities involved in the digitization of cultural heritage items. Two working groups have been formed, one addressing content that can be captured in still images, the other involved with content categorizing sound, video, or motion-picture film. The Federal Agencies Still Image Digitization Working Group will focus its efforts on content such as books, manuscripts, maps, and photographic prints and negatives. The Federal Agencies Audio-Visual Working Group will address standards and practices for sound, video, and motion picture film.