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• Documents giving authoritative recognition of a fact, qualification, or promise.

• Books in which financial accounts are kept.

• Visual works created or modified using a computer or other digital medium. These products are exhibited in a variety of ways: statically or as interactive concepts that may reveal or obscure their computer origins. For works that use computer machinery intrinsically as a part of the work, use "computer art."

• Documentation summarizing the activities of an organization over the course of a year.

• Photographs in which the tones or colors are reversed from their appearance in nature, usually on a transparent support of celluloid, acetate, or on paper, intended for the purpose of producing positive prints. For finished prints in which tones or colors are reversed, see "negative prints." When a glass plate is painted or drawn on and a photographic print made from it, use "clichés-verre."

• Negatives that have a gelatin layer as a binder on a glass support.

Use for: Colloquium ephemera Colloquium materials Congress ephemera Congress materials Conference ephemera Conference programs Convention ephemera Convention materials Meeting ephemera Meeting materials Programs, Conference Seminar ephemera Seminar materials Symposium ephemera Symposium materials Workshop ephemera Workshop materials

• Public notices or paid announcements, especially those in print. For announcements paid for by an advertiser and broadcast on radio or television, use "commercials."

• Books, loose-leaf binders, or other volumes containing blank leaves, on which persons have written sentiments, quotations, or signatures.