Alcohol Sponsor Needed for Private Event

My friend works for Hungry? Chicago and their launch party for the new restaurant guidebook will be this September. Does anyone know of an alcohol vendor that may be open to sponsorship? This email excerpt gives more detail:

We're looking for a donation for the party- for hard liquor, usually 3-4 bottles, and they'll get promotion both with the invite and the party (which press will attend). We haven't done wine before, but we'd obviously need more than 4 bottles there. Our goal for the parties is to have one signature drink that is free for guests, and a cash bar from the venue for anything else.

Thanks!