Association of American Publishers (AAP)
American Booksellers Association (ABA)
Inside Book Publishing
Magazine Publishers of America
Northwest Independent Editors Guild
Publishing Careers at Blogspot
Washington Newspaper Publishers Association (WNPA)
Media in Seattle from Wikipedia
Washington Occupational Information System (WOIS) - at this site, you can research various professions and gain valuable information about typical job tasks and qualifications, employment outlooks, salary information, career development, and more.
Look for publications, i.e. newsletters, magazines, blogs, etc.