To help solve this mystery, you may find the following pieces of evidence helpful (Right-click to open each in new window.)
There are sixteen pieces of information to be found, including a final clue for GZ.Good luck!
Caches can take the CO a great deal of time to craft and hide, so if you did enjoy solving The Enigma of the Midnight Manuscript, please do add a story with your log and share a favourite point. It certainly inspires us to continue to create new and interesting caches for our community.