Physicist (1797–1878) who conducted experiments in the field of electromagnetism and served as the first secretary of the Smithsonian Institute. Original 2.25 x 3.75 carte-de-visite photo by Brady Galleries of New York, signed in the lower border in black ink. In very good condition, with trimmed top edge, some light edge silvering, and scattered rubbing and spotting to image. Accompanied by an unsigned 4 x 2.25 carte-de-visite of the Smithsonian headquarters. RR Auction COA.