Certificate of 100 shares issued in New Jersey in 1902. Cancelled with a cancellation stamp. Issued to Susan S. Townsend.

Portrait of Thomas Edison.

The Edison Portland Cement Company was a venture by Thomas Edison that helped to improve the Portland cement industry. Edison was developing an iron ore milling process and discovered a market in the sale of waste sand to cement manufacturers. He decided to set up his own cement company, founding it in New Village, New Jersey in 1899, and went on to supply the concrete for the construction of Yankee Stadium in 1922.