Joseph Henry's daughter Helen, by Gardner, Alexander 1821-1882, c. 1855, Smithsonian Archives - History Div, Portrait of Helen Louisa Henry (1836-1912), daughter of Harriet Alexander Henry and Joseph Henry. Joseph Henry (1797-1878), was a physicist and the first Secretary of the Smithsonian Institution from 1846 to 1878. This photograph is a profile of Helen's face..