Your career is too important to spend your time looking for a job on a variety of sites. If you were sick you would find the best possible doctor. You should do the same thing with your job site. There is no better job board in the world for legal professionals: LawCrossing shows you jobs from every single employer career page, job website, association website
If the company is local, visit the corporate office and ask for the information in person. You may get material not commonly sent out. You'll also get a chance to demonstrate just how resourceful you are.