Head conservator at the Philadelphia Museum of Art Marigene Butler oversaw a 1983--89 multi-national research project investigating the painterly techniques of Philadelphia painting and its relationship to the Turin painting and oversaw further restoration.
Head conservator at the Philadelphia Museum of Art Marigene Butler oversaw a 1983--89 multi-national research project investigating the painterly techniques of Philadelphia painting. Head conservator at the Philadelphia Museum of Art Marigene Butler oversaw a 1983--89 multi-national research project investigating its relationship to the Turin painting. Head conservator at the Philadelphia Museum of Art Marigene Butler oversaw further restoration.