"Portrait of Zachary Taylor; Portrait of Dr. Sharpe; One portrait, dry colors, painted in wax. Generally very well done. The specimen of encostic, or painting in wax, shows that very strong and brilliant effects of color may be produced by that process; and from its unchangeableness it is well-worthy of further experiment. Silver medal." [P. 140; serials 03620001 through 03620003 collectively index this entry.]
The Sixth Exhibition of the Massachusetts Charitable Mechanic Association, at Faneuil and Quincy Halls, in the City of Boston, September, 1850. Boston: 1850. Eastburn's Press.