17,000 Plant samples
Under Edison’s leadership, the corporation sought a source of rubber that could be grown and produced quickly in the U.S., in the event of a foreign supply shortage. After testing more than 17,000 plant samples, Edison eventually selected Goldenrod as the most suitable.
The Laboratory was operational until 1936 (five years after Edison’s death), when the project was transferred to the U.S. Department of Agriculture. The layout of the interior contains a chemical processing area, machine shop, grinding room, office and dark room.