Preservation treatments managed by the Preservation & Collection Management Unit include custom housings (boxes, mats, etc.), reformatting, cold storage, microfilming, digitization, and full-scale conservation treatment. If there is any doubt about proper treatment or housing, please consult with the Preservation Coordination Librarian about what treatment or housing may be required. The same Preservation Request slip is used as the routing form for all treatments, although for some formats additional information may be required, as outlined below. Note that preservation of electronic media is handled within the Manuscript Unit.