www.bso.org/brands/bso/contact-us/jobs/tanglewood-seasonal-jobs.aspx
www.hireculture.org        (actual listings)
www.berkshirecreative.org       (actual listings & ideas for other organizations to pursue)
www.clarkart.edu        (museums generally, education, kids activities, special programs)
 Also check;
                Indeed, Simply Hired, Monster, Craigs List etc. for listings as wellas local newspapers and everyone you know.
                 If there is a related listing, but not exactly, figure out a way to approach the hiring organization. See the career counselor for advice.