Traveling Independent Contractor

I have worked with several travel agencies and but through word of mouth found a traveling job as an independent contractor. I want to continue to work as an independent contractor but wonder if there is an easier way to find a position then cold calling. When talking to traveling companies they always refer to their 'Lists" of available openings. How do I get access to these lists? If you go to a site like Absolutely Healthcare they don't give the name of the facility and direct you to a recruiter. Is there a subscription based list that facilities send their postings to?