There are several graduate programs in conservation in the U.S. The
U. of Delaware/Winterthur, Institute of Fine Arts in NY, Columia U., and
another I can't think of at the moment. Your best bet is to contact
the American Institute for Conservation (AIC), 1400 16th St. N.W.,
Wash. DC 20036 or the National Institute for Conservation (NIC),
3299 K St. N.W., #403, Wash. DC,20007.  Good luck!