A high-use title is any title request five or more times since accession. Both physical delivery and EDD requests are included.
The initial purpose of ReCAP was to shelve low-use collections. Due to space need, selector decision and patron trends, some titles may be considered higher- or high-use.
High-use title lists do not take into account that multi-volume set and serial titles include many separate volumes that may be requested. Sheer request volume also does not take into account how long titles have been available for request at ReCAP. Staff requests for archival processing are included and do not represent patron usage of collections.
Ultra-high-use titles have 100 or more requests. These titles are almost exclusively long serial runs and archival collections. Total requests for archival collections include staff requests for processing. Since 2006, more staff has been added to University Archives, accounting for an increase in processing requests.