Special Exhibitions
Conserving the Past for the Future
Conserving the Past for the Future
A Conservation Tour
The Mass of Saint Gregory: Examining a Painting Using Infrared Reflectography
The Mass of Saint Gregory
Hans Baldung Grien,
Saint Anne with the Christ Child, the Virgin, and Saint John the Baptist
, c. 1511.
Samuel H. Kress Collection
Photograph © 2001 Board of Trustees, National Gallery of Art, Washington