Here in LA, they have weekly mags like "LA Weekly". In the back, there is a help wanted section that is strictly adult and has everything from models to porn. Maybe see if you have something similar in your town.
Personally I don't see how a mag like that would survive anywhere but in really large cities. Very risky stuff, They have like 10 pages of nothing but pictures of call girls advertising themselves. And LA Weekly is one of the tamer ones.
