Thanks to Barb Woldin of American Medical Writers Association (AMWA), who posted this list of organizations that writers might want to belong to:
http://www.councilscienceeditors.org/i4a/pages/index.cfm?pageid=1
These last few are compliments of Pat McNees Web site, Writers and Editors, through Barb Woldin:
http://writersandeditors.com/index.htm
http://www.amerindywriters.org/
http://www.asja.org/pubtips/pubtips.php
http://www.healthjournalism.org/
http://www.authorsguild.org/?p=101
And the two organizations that I belong to:
Society for Technical Communication, http://www.stc.org/
American Medical Writers Association, http://www.amwa.org/