Letter from Joseph Henry to Alexander Bache (August 9-10, 1838), by , August 9-10, 1838, Smithsonian Archives - History Div, Letter from Joseph Henry, then a professor at Princeton University and later first Secretary of the Smithsonian Institution, to Alexander Dallas Bache, a physicist and later Smithsonian Institution Regent, August 9, 1838. In the letter, Henry discusses his recent trip to Europe, and the need for raising standards for scientific study in the United States..