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• Compact discs on which a large amount of digitized read-only data can be stored.

Use for: CDs

• Recordable compact discs. CD-Rs have a light-sensitive layer which can be recorded onto, or "burned," by a CD-recorder.

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

• Documents, usually sealed, granting specific rights, setting forth aims and principles of a newly established entity, and often embodying formal agreements and authorizing special privileges or exemptions.

• Greeting cards that are sent or given as expressions of goodwill at Christmastime. The first Christmas cards were made in the 1840s in England. The tradition is followed in all English-speaking countries and the practice is growing in many others.

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.

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.

• 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.

• 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."

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

• 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.

• 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.

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.

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

• 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.