you can look up the local chapter of the Ad Fed (advertising federation of america) and see their member list. Depending on what you want to spend, you may want to seek out a Jr. Ad Fed (Ad2) where more youngin' looking to build their portfolio would be looking for freelance work. These days, almost anyone who has poked around an Adobe program can call themselves a designer, so looking at designers who are interested in professional development through organizations like AdFed will usually get you a higher quality of work.