Thomas Benedict Clarke by Charles Frederick Ulrich, 1884, oil on panel, from the National Portrait Gallery - NPG-8900552A 2

Thomas benedict clarke by charles frederick ulrich, 1884, oil on panel, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_npg. 89. 202). Date: 1884.