The Municipal Archives is responsible for preserving and making accessible the records in its care in perpetuity. Preservation microfilming is the most practical and economical means of insuring the long-term survival of the intellectual content of archival material. If produced according to accepted standards and stored properly, microfilm will remain stable for hundreds of years and the information will be easily accessible. Although digital technology has greatly improved the way in which records are discovered and made accessible, electronic media presents a host of preservation problems.
The Municipal Archives reformats material on 16mm or 35mm film. Master copies are stored in a secure, climate-controlled, off-site facility. Duplicate copies are made available to the public in the reference room. The Micrographics Unit is funded through a combination of city funds and outside grants. Recent projects include reformatting nineteenth-century felony court indictment records, estate inventories, and mayoral scrapbooks.