The Smithsonian is in the process of reopening our museums, research centers, and the National Zoo. For the latest updates and opening information, please visit si.edu/visit and check back regularly as information may change.
Supplied Caption: Portrait of Jean-Baptiste Dumas. Engraving by Samuel Freeman, 1773-1857, published by William Mackenzie. After Emililen Desmaisons, 1812-1880.
