John Quincy Adams by Izaak Schmidt, 1783, pastel on vellum, from the National Portrait Gallery - NPG-9100006B 1, Izaäk Schmidt

John quincy adams by izaak schmidt, 1783, pastel on vellum, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_npg. 91. 3). Date: 1783.