Great site with links to all aspects of the music business, including labels, promotions, event planning, etc.
The New Hampshire Creative Club
Lots of contacts in NH for graphic design, advertising, photography, printing and so forth.
Society of Illustrators
American Institute of Graphic Art
American Association of Museums
Graphic Artists Guild
Costs a bunch to join ($75 for student membership), but might be worth it. For a good local deal, see the NH Creative Club above.
"Teaching artists the fine art of marketing art."
Contains great list of art advocacy and interest organizations. Also art and education links -- great site for art ed majors.
Creative Career Search
LOTS of links for creative types: visual arts, entertainment, performance, poetry, etc....
Fashion Jobs Central
Creative Jobs Central
It costs to join, but it has job postings in everything from acting to sports... might be worth it!