What is an interstitial book?
An interstitial book is one that falls between categories defined by the standard guide to library cataloguing, the AACR2R (Anglo-American Cataloguing Rules, Revised). This may be for a variety of reasons. For example, because it lies between accepted genres or disciplines; because it is notable for qualities not often recognized as intrinsic (such as smell or taste); or because it does not yet exist, no longer exists, or is entirely imaginary. Many, but not all interstitial books are obscure: some canonical books are interstitial, while some may become interstitial by association. Please see our cataloguing guidelines for details.
