So a while back I did a back of the envelope calculation of how many magic items there were in the order (310 major items, 775 medium items, and 2235 minor items made by mages who are now dead, with half that many made by mages still living).

I have started working on a similar calculation for the number of books. I thought I'd post what I have at the moment, and see if anyone has any additional thoughts.

First, the background numbers:

Here are the number of living and dead mages for each house, my estimate for the number of books written by the average mage of each house, and the number of texts copied by mages of each house over the course of their life. Living mages are assumed to be on average half way through their lives, so have written half as many books per mage as the dead mages:

This assumes that most mages write mostly small, single season books, and that a mage can copy 3 seasons worth of book in a single season, and spends roughly 3-4 years (out of mage life of ~60 years) either scribing or writing. Does this seem reasonable?

Since there are 48 covenants, the average covenant would then have roughly 290 magical texts, although some will have many more (I imagine Annalum has a library of nearly 3000, since it actively pursues copies of everything written), so the typical covenant might have more like 200. This would make Nimus Animae a fairly typical younger covenant (with just under a hundred).