Lost and Found

So, this sweet little guy is amazing around Miss Ginsie, totally wants to be around a human (he slept curled up against my back last night), and is very clearly trained. I know someone is missing him.
Given that, I've searched craigslist and put up a found ad. I called up the non-emergency police to which I got a "No, no one called here about a lost cat. *click*" Uh, seriously? You don't want my phone in case someone does call up this morning? I also called animal control and the animal shelter to leave messages. He's perfectly fine here but I know someone else is missing him and probably frantically trying to figure out who to call and what to do.
I don't think I can do much more. I'll look around the neighborhood for lost cat flyers and up at the grocery store especially. We have a community board up there. I'm sort of hesitant to post a "Found" cat poster since anyone can claim that he's theirs. Like I said, I put one up on craigslist but not with a lot of detail beyond gray striped cat.
Because of the cat, I may not make it to Holiday Faire. I really want to make finding this poor guy's owner my priority.