backshelf

A backshelf is a term used in various contexts, most commonly in libraries and bookstores, to refer to items that are not part of the current display or main collection. These items are typically stored on shelves behind the main display shelves, hence the name "backshelf." They can include older editions, less frequently requested titles, or items that have been temporarily removed from circulation but are still retained.

In libraries, the backshelf might hold retired books awaiting discard, archival materials, or books waiting to be reshelved after being used by patrons. For bookstores, it can house overstock inventory, books that are out of print but still available for purchase, or items that have been returned by customers. Accessing items from a backshelf usually requires assistance from staff, as they are not intended for casual browsing. The term can also be used more metaphorically to describe resources or information that are not readily accessible or are kept in reserve.