Mark W. Leonard is Chief Conservator at the Dallas Museum of Art. Before that, he spent 23 years at the J. Paul Getty Museum in L.A. To learn more about restoration, check out a short YouTube video about his restoration of Jean-Baptiste Oudry's "Rhinocerus" at http://www.youtube.com/watch?v=W__HcqCVpF4
The primary industry group for conservators in the United States is the American Institute for Conservation of Historic and Artistic works.(http://www.conservation-us.org)