I ate at the Buffet Palace today at 183 & Lamar, and on the back of my fortune cookie, instead of Lotto numbers, it read:
Vote Nov. 7 for Prop 4 Invest in Austin's Creative Community
No mention of who paid for this political ad, what Prop 4 is, or anything else. I googled around a bit and found a website that talks about Prop 4 (No free bandwidth for you).
As far as I can tell, it's about $32 Million for a whole bunch of minority art projects.
Putting the whole issue of the merit of Prop 4 (which I oppose) aside, I do believe you are required to indicate who paid for a particual political advertisement.
I am going to look into this more ... I may post a scan of it later tonight.
UPDATE: It's legit. Look for yourself over at: http://www.ethics.state.tx.us/pamphlet/G03polad.htm
I wrote an email in to the PAC that's supporting prop 4, and have been told that they didn't sponsor the fortune cookies, just in case anyone is interested.