Glass Key Photo is a specialty "all things film/traditional" shop in Lower Height in San Francisco, California. They are inside of 4x5 Gallery in case your trying to find it from the street.
This is where I get most of my film (when I don't get it for free) and where I send my alternative process students for materials. If you have never been, check 'em out. Don't tell them I sent you though, cause they will mark up the prices . . . everybody hates me!
Keep It Snappy,