remember the jackalope
ha yeah.snip/To take it one stage further, in Underworld (DeLillo) there is an imaginary lost Eisenstein film which is found and shown.
Infinite Jest revolves around the Mad Stork's lost film of the same name (as the book).
EDIT: But really----is anything really lost? or just in the wrong hands. or in the wrong place or time. it is all about context and one's expectations.