Y'know, I had 3 or 4 of those Waco games boxed before and I remember they said "Made in Japan" on them. ( EDIT AGAIN: Just realized you said that lol). I don't know if Waco was based out of Waco or not, though. The only game-related company that I know of based out of Waco is Puremco. They make those "Marblelike" dominoes that you sometimes see at garage sales. They're quite common here and suprisingly they tend to bring some money on eBay.
EDIT:
Dock sale again today. Not much to write about really, got a NES Power Pad for a buck and a PS2 with hookups and 2 controllers for $5. Haven't tested it out yet so I'm not sure if it works.
EDIT AGAIN AGAIN: I can't believe it. The PS2 I got works fine. It had a copy of Twisted Metal Black in it. Not bad for $5.