Letter from Solomon G. Brown to S. F. Baird, September 6, 1862, by Brown, Solomon Galleon c. 1829-1906, , Smithsonian Archives - History Div, The first African American employee of the Smithsonian Institution Solomon G. Brown's letter to the Assistant Secretary, later the second Secretary of the Smithsonian Institution, Spencer F. Baird, reporting that Confederate troops had arrived in Maryland and the railroads are unreliable for post. Brown promised to send the packages Baird had requested in a previous letter, but was unsure whether or when they would arrive. 2 pages..