I've been reading an awesome book that I picked up at the library, "VisionMongers: Making a Life and a Living in Photography" by David DuChemin. I've been enjoying it so much and pulling out a ton of useful info that I decided to buy it. I've read many "make a living with photography" books and a lot of them seem to be the same regurgitated material of nothing new and barely above the obvious. David includes many links and companies that he gets good results from. It's a truly useful resource found here.
Find David here and be sure to connect with his blog too.