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• Photographs made by the process called daguerreotype, which produces a direct positive image on a silver-coated copper plate. They are often mounted in special cases lined with red velvet or leather. They are named for Louis-Jacques-Mandé Daguerre of France, who invented the technique in collaboration with Nicéphore Niépce in the 1830s.

• Records tracking the goods passing through and fees collected at customs, which is the area at a seaport, airport, etc., where goods, luggage, and other incoming items are examined and customs duties levied.

• Any forms of addressed and written communication sent and received, including letters, postcards, memorandums, notes, telegrams, or cables.

• Documents, enforceable by law, embodying agreements between two or more competent parties to do or not to do something, and specifying the terms and conditions of the agreement.

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

Use for: Master plans (orthographic projections)

• Organized, detailed proposals that are comprehensive in scope and lay out strategies and schemes of action for something to be done. Examples include land use control law, zoning, and urban redevelopment omnibus plans of cities or towns for housing, industry, commercial, and recreational facilities and their impact on environmental factors.

• In science, business, policy, and other fields, a careful item-by-item comparison of two or more comparable characteristics, alternatives, processes, products, qualifications, sets of data, or other features.

• Optical disks on which sound recordings, data, or programs, are digitally encoded for a laser beam to scan, decode, and transmit to a playback system, computer monitor, or television set.

• Items produced, issued, or worn to commemorate a person, event, or occasion. For structures erected to preserve the memory of persons or events, use

• The broad class of photographs having images composed of more than one hue, plus the neutral tones. For photographs having a range of tones within one hue, see "black-and-white photographs."

• Photographic negatives that record on a single base the hue and lightness of a scene in values that are complementary in relation to the scene's actual perceived values; e.g., light blue is recorded as dark yellow. See "color separation negatives" for images in which each color is recorded on a physically separate negative.

Use for: Clippings

• Illustrations, pages, articles, or columns of text removed from books, newspapers, journals, or other printed sources and kept for their informational content.

Use for: Cityscapes

• Refers to creative works that depict settlements that may be considered cities, which are large or important communities with population, status, and internal complexity greater than most towns in the region.