I happened upon this story about a scheme to smuggle drugs into a Michigan prison using library books. From the Muskegon Chronicle:
Inmates at the prison in eastern Montcalm County communicated with somebody on the outside, providing titles to check out from the Madison Square branch library on the southeast side of Grand Rapids. The outsider was to check out the books, cut open the bindings, tuck drugs inside, then reseal them. Then, the accomplice would return the books to the library and contact the inmates, telling them which drug-packed books to request.
Luckily the plot was foiled before any books could be mangled in its service.