Here's an interesting academic paper on RPG books in libraries: http://boingboing.net/2015/09/24/study-tracking-every-rpg-book.html
The short version: libraries have pitifully small collections of RPG books.
Obviously, someone needs to give me a $3 million grant to create a dedicated RPG Industry Research and Preservation Library. Hasbro? Lisa Stevens? Eh? Eh?
Better idea: tell rpg publishers how to market to libraries and give grants to libraries that buy rpgs.
BUY MY BOOKS
Unfortunately, it very rarely works that way (as far as I know) - libraries have to go chase down donors and try talking industry into sponsoring a partnership or something. But if you could talk an RPG publisher into donating, they'd probably want to target library systems with decent graphic novel and manga collections because the teen and children's librarians there are more likely to be receptive to the idea. Also focus on libraries with Maker spaces - again they are more likely to be able to find advocates there for innovation. Or you know, go right to the ALA group on this topic: Games and Gaming Round Table (
http://www.ala.org/gamert/). And get in on International Games Day and Games in Libraries - Nov. 21st this year:
http://igd.ala.org/Hey Trinite, what kind of library you want to build here? Public/lending, academic/research or an archive? Either way, you better be taking my resume for a technical services position