Healy, George Peter Alexander. Circa 1845. "John Caldwell Calhoun." Portrait of John C. Calhoun. This oil on canvas painting is part of the collection at the National Portrait Gallery with the accession number NPG.90.52. The dimensions of the painting are height: 919 mm (36.1 in) and width: 741 mm (29.1 in). Created in the United States of America. Available at Google Arts & Culture with the asset ID PQGs5qhOKikdCA.