Dorothy C. Draper by George N. Rockwood after John William Draper, gelatin silver print copy after c. 1839 daguerreotype, from the National Portrait Gallery - NPG-S NPG 78 153Draper-000001, circa 1839

Dorothy c. Draper by george n. Rockwood after john william draper, gelatin silver print copy after c. 1839 daguerreotype, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_s_npg. 78. 153) although the national portrait gallery identifies the photographer as george n. Rockwood, it seems likely to have been george g. Rockwood. Date: circa 1839.