Association of American Publishers - http://www.publishers.org/
America’s premier publishers of high-quality entertainment, education, scientific and professional content – dedicating the creative, intellectual and financial investments to bring great ideas to life.
Media UK - http://www.mediauk.com/
Contains full listings of all British media websites, jobs, and news.
Total Telecom - http://www.totaltele.com/
Features telecommunications news, research reports and events for the communication industry professionals worldwide. Also includes jobs and newsletter.