Link to the Image Source
Smithsonian American Art Museum

Artwork Details 

Title: Mrs. James Reid Lambdin (Mary O'Hara Cochran)
Dated: ca. 1850
Medium: watercolor on ivory
Dimensions: 4 3/8 x 3 1/2 in. (11.2 x 9.0 cm) rectangle
Location: Smithsonian American Art Museum
City, State: Washington, D.C.