Thomas Pownall by Richard Earlom after Francis Cotes, 1777, mezzotint on paper, from the National Portrait Gallery - NPG-NPG 77 95, Richard Earlom

Thomas pownall by richard earlom after francis cotes, 1777, mezzotint on paper, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_npg. 77. 95). Date: 1777.