Not Available is an album by The Residents. It was originally recorded as a follow-up to 1974's Meet the Residents. However, following the Theory of Obscurity, it was immediately locked away in a bank vault with no plans to issue it until the members of the band had completely forgotten about its existence. It did surface in 1978 due to continued delays on the Eskimo album and the Cryptic Corporation's desire to have some sort of Residents release, as the re-release of the single "Satisfaction" the same year had garnered some attention in Europe. The album itself is a dense concept album featuring a more musical and cohesive approach than that found on most Residents albums from the 1970s.
In 1978, the "official" word was that The Residents had stated that Not Available could never be released. The group claimed that they had recorded the album in secrecy as a way of exercising their "theory of obscurity" to its fullest, and, in strict accordance with the theory, the work could never be released until its creators no longer recalled its existence. However, the reissued album's liner notes state that the album was an exercise in group therapy, and the Residents didn't want to release it because they felt it was too personally revealing.
In October 2010, The Residents' Ralph Records announced that a special extended version of Not Available would be released on vinyl and CD in January 2011.