Any brick and mortar stores to buy old video game sheet music in the LA area?

I’ve been getting (or wishing I could get) some older, out of print Doremi books from ebay and the like, but I was wondering if anyone knew of any Japanese book stores (or any place that might have them, really) in the LA area that might have anything? I stopped by the Book-Off in Gardena, and while I found a bunch of OSTs, their sheet music section lacked any semblance of video game scores. Anyone from the area know of anything?