After Elvis Presley died there was a short film titled "He may be dead, but he's Elvis" in which Elvis' corpse is taken on tour... propped up on a stool with a guitar with his records playing (to the applause of adoring fans). Once the body became too decayed to haul around, it was cut into small pieces and put in those little bubble-packs (a card with a plastic bubble mounted to it like many toys are packaged) and sold as "Bit O' Elvis." Pretty funny little film. Not sure why this made me think of that. Probably the milking-a-dead-cow aspect of forging signatures on books that were printed after the author died.