Separates, slip opinions, slip laws, advance or preliminary reports only upon receipt of the bound volumes or cumulated issues or products Reprints, provided the library has received the original edition Publications upon receipt of a revised edition or an edition that states it supersedes. If a later edition is distributed through the Federal Depository Library Program or is otherwise available to the library, the superseded edition can be discarded by the library, even though that library has since deselected the item number and does not possess the new edition. Pages from loose-leaf publications that are replaced by new pages Transmittals, corrections, changes, errata, etc., to a basic text or manual that the depository has yet to receive, are considered superseded and can be discarded after being retained for one year Lists and indexes of publications of various agencies upon receipt of complete new editions. Small spot-lists, such as publication announcements, may be discarded 90 days after receipt Annual or biennial publications that merely revise information and bring it up to date, such as Index of Specifications and Standards, Light Lists, etc., upon receipt of a new issue. This permission does not apply to annual publications such as annual reports of departments and agencies, which cover the activities of the organization for a specific period of time Materials that have an effective expiration date, unless otherwise covered, may be discarded after expiration of the event.
Some agencies make CD-ROMs available to depository libraries that are compilations of publications.
While some titles on the CD may be superseded, this may not be true for all the titles contained on the disc. Additionally the disc may contain monographs that are not superseded. Librarians should exercise caution when determining the retention status of these CDs. The publication that was initially distributed should be removed from the collection and disposed of accordingly. This is done in order to prevent misinformation from being disseminated to the public.