Here's a few found online:
http://www.allaboutboards.com/articles.html
http://managementhelp.org/boards/brdjobs.htm
http://www.scoreknox.org/library/board.htm
http://www.boardsource.org/Bookstore.asp?Type=epolicy&Item=1031
http://www2.guidestar.org/rxa/news/articles/2006/finding-effective-board-members.aspx?articleId=740
http://www.idealist.org/if/idealist/en/FAQ/QuestionViewer/default?section=03&item=02
http://www.cilww.com/board_member_job_description.htm
http://209.85.173.132/search?q=cache:YosfmuGMYDUJ:
www.nonprofitworks.com/downloads/Board_Job_Description.doc+board+member+job+description&cd=3&hl=en&ct=clnk&gl=us&client=safari>