Do you know how you get liquor sponors for a charity event in Downtown LA on Sept 25th?

we have a charity event at a very nice location and we need to get liquor sponsors but I am not sure if you go to the distributors or directly to the company? if so does anyone have contacts that I could use? it would be tax deductiable and for an AMAZING cause.|||I'm not sure what you're asking for. Is it for liquor to be served at the event, or to auction off to donors?