“Selection in reverse” Importance: without an on-going weeding program, a collection can quickly age and become easily to use. When libraries, whether large or small library, reach the limit of their collection, their confront 3 alternatives: Acquire new physical facilities, Divide the collection (which also require space), Weed the collection (which may or may not require new space).
H. F. McGraw As “the practice of discarding or transferring to storage excess copies, rarely used books, and materials no longer of use.”Purging As “officially withdrawing a volume (all entries made for a particular book have been removed from library records) from a library collection because it unfit for further use or is no longer needed.” Applies more to library’s file than to items in the collection.
Stanley J. Slote Is “removing the noncore collection from the primary collection area [open stack area].
DISPOSING Forms: exchange programs, Friends of Library book sales or sale to an out-of-print dealer for credit against future purchase.STORING Retains the item at a second level of access. Second level of access normally is not open to the client and frequently some distance from the library. For Academic library: on or off campus storage unit. For public lib: under their own custody.
Primarily supplying materials that meet the current needs and interests of a diverse community of users. User demand is the important factor influencing selection and deselection; materials no longer of interest or use are candidates for storage or disposal. Ideally, as for discarding, a public library rule of thumb is that collection should turn over once every 10 years.
There are differences (responsibilities) due to size: Small and branch public libraries focus on high demand materials, with little or no expectation that they will have preservation responsibilities. Large public libraries often include housing and maintaining research collection, they have to consider a wide range of issues (materials) when undertaking a deselection program.
A survey of North American public libraries’ weeding practices, 2002 294 libraries in Canada and USA 5 Top reasons for weeding: Accuracy/ currency of information Physical condition Space needs Usage history Duplicate copy
Weeding Library Collections, Stanley J. Slote. Relying on circulation data (shelf life) to identify candidates for weeding. The CREW Method: Expanded Guidelines for Collection Evaluation and Weeding for Small and Medium-Sized Public Libraries, Belinda Boon and Joseph P. Segal. MUSTIE (M= misleading, U= ugly [worn-out], S= superseded, T= trivial, I= irrelevant to your needs, E= available elsewhere) CREW (Continuous Review Evaluation and Weeding)
Deselection is easier because of comparatively straightforward and predictable use of patterns, the small size and homogeneous nature of clientele, and relatively narrow service goals for the library. Deselection takes place with little hesitation because costs and space are prime considerations.
Traditionally, the purposes of academic research library have been to select, acquire, organize, preserve and make available the full record of human knowledge. Collection development officers seldom view demand as a valid measure of item’s worth. Potential or long-term research value takes highest priority.
Have slightly better track record of securing funding (for additions to their buildings, new buildings), they, too, face finite collection space and a mission goal of preserving information resources, thus deselection has become part of academic library life cycle. Bulk of the academic “weeds” go into some type of lower-cost storage unit either on or off campus.
When compact shelving is closed to the public, one has the option of changing how one houses the stored material.
Employed highly structured collection development practices. The need to coordinate collection development with the curriculum needs is imperative, more particularly when there is a major shift in the curriculum; the library must remove most of the old material. To some degree, the media center’s deselection problems are fewer, other library serve as backup resources.