Jennifer, you may have heard of the American Youth Harp Ensemble, based not far from where you are, in Richmond, Virginia. Lynelle Ediger is Artistic Director, and the group of young students has played on a tour to Europe, and in the White House, and in April they are headed for Alice Tully Hall, in Lincoln Center. It seems to me, transporting many harps without damage would require each one to have a hard case.You could get in touch with the group by http://www.harpensemble.org, or their mailing address: Harps Foundation, 4200 Dover Road, Richmond VA 23221.