Ok, well, that is rather interesting. Archive: https://archive.today/Iqynx From the post: >>The 60,000 books in the Joanine Library are all hundreds of years old. Keeping texts readable for that long, safe from mold and moisture and nibbling bugs, requires dedication. The library’s original architects designed 6-foot (1.8 meters) stone walls to keep out the elements. Employees dust all day, every day.