From The Digital Reader
Bethesda Software built in a nice nod to libraries as part of the loot acquisition system in Fallout 4. Apparently collecting and returning overdue books to the library gives not only some caps, but also tokens that can be redeemed for special loot. So even as the world collapses and our cities are reduced to wastelands, don't forget to get your books back on time!
http://the-digital-reader.com/2015/11/17/book-lovers-get-a-nod-in-fallout-4/