What a great spin on a pile of old, useless, dusty bank accounting books. The bank of Naples probably has warehouses full of the giant tomes. Leave them to rot? Nope, create an interesting space, cram it floor to ceiling with the books, have some displays and, bam, you opened a cool museum.
Typical room. Grab a volume, stay a decade.
Details. Some books are open so you can see how much someone owed for three cows. The reading is thick.
No limit on book thickness, whatever the binder could wrap. Yep, these books are from the 1700s and earlier. A later ID label- typing!