what hangs on the walls of dimmesdales library

Basically Biblical tapestries,

"The walls were hung round with tapestry, said to be from the Gobelin looms, and, at all events, representing the Scriptural story of David and Bathsheba, and Nathan the Prophet, in colours still unfaded, but which made the fair woman of the scene almost as grimly picturesque as the woe-denouncing seer."