When are they going to chance upon the tomb of an inveterate book lover? Someone with a broad sampler of his faves, with which to while away eternity?
That would be great! When such things have been found often they’ve been recycled scrolls used for mummy wrappings. Those have been in Egypt which is arid, and that’s the problem — tombs tend to be below ground and moist by and large organic material just rots.