Mrs. George Henry Loring (Amalia Heredia)
Created in 1849 on Watercolor on ivory by Richard Morrell Staigg,"Mrs. George Henry Loring (Amalia Heredia)" is an artpiece of 4 1/2 x 3 9/16 in. (11.4 x 9 cm).
For more informations : http://www.metmuseum.org/art/collection/search/12632
nice information, i have done my Ms in Museum Conservation glad to hear about such an artifact.