The Freelance Photographer’s Market handbook (2005/2006/2007/…)
Bureau of Freelance Photographers
BFP Press This is essentially a directory of potential photo buyers. It lists by subject area magazine publishers and book publishers. Horribly boring to read but useful if you want to find an address to contact to sell pictures to. It talks a bit about agencies too but that industry is so much in flux these days so I am not sure a book like this manages to be up-to-date. It is nothing more than a place to find prospects. It deals with the UK only! Buy it for the contacts.