The Academy of American Poets http://www.poets.org/index.php
The American Society of Journalists and Authors http://www.asja.org
The Author’s Guild http://www.authorsguild.org
Editorial Freelancers Association http://www.the-efa.org
Education Writers Association http://www.ewa.org
Mystery Writers of America http://MysteryWriters.org
Science Fiction and Fantasy Writers of America http://www.sfwa.org
Sisters in Crime http://SistersInCrime.org
Society of Children’s Book Writers and Illustrators http://www.scbwi.org
Writers Guild of America http://www.wga.org