Benjamin West, Esqr R.A. and His Son RI West. Dated: 1773. Dimensions: plate: 38.8 x 27.7 cm (15 1/4 x 10 7/8 in.) sheet: 61.6 x 45.5 cm (24 1/4 x 17 15/16 in.). Medium: mezzotint on laid paper. Museum: National Gallery of Art, Washington DC. Author: