Re: Keepers of...
I've known a few "keepers of" in my time.
Here, someone had the additional job title 'Keeper of the Scientific Books' which I think is a good one. She's retired now, not sure who has taken on that title (it is an official title rather than a 'known as').
They'd also jealously guard the purchasing budgets. I once placed a requisition for ordering 10 RJ-45 plugs, only to be asked, "Do you really need 10, won't 5 be sufficient?" I did point out the pack size and MOQ were both 10!
Back in the days when online ordering was not quite so common, and procedure meant that ordering stuff for the stationery cupboard rather than for my own department had to be sent to a PA who would ask accounts to raise an order, I had requested N boxes of high density floppy disks.
The accountant proudly gloated after it had gone through that he'd saved us more than £20 by changing the order to standard density floppy disks and that I really should be more observant when looking through the catalogue. A week later I repeated the order and made it clear who was responsible for having bought a stock of floppy disks that were half the capacity and of virtually no use to anyone.