Newspapers and their indexes are not classed and are developed and housed in separate collections. 080 General collections. Generally, new quotation materials are placed in the reference collection. 090 Manuscripts and rare books. This is a case by case call based upon transactions of the item.
Library guides no older than four to five years are retained.
Historical value of each censorship source is evaluated before discarding. In other words, when one is purchased, one is weeded. Guinness Book of World Records is retained for ten years. The 1873 version of Robert s Rules of Order is retained, in addition to representations of the newest edition of the Rules.