Link to the Image Source

Artwork Details 

Title: Caleb Bull
Dated: ca. 1790-1795
Medium: Watercolor on ivory
Dimensions: Oval: 1 3/8 x 1 3/16 in. (3.5 x 3.0 cm)
Location: Yale University Art Gallery
City, State: New Haven, CT
Notes:
Subject: Portrait male -- Bull, Caleb -- Bust