Typed on back: "150th ANNIVERSARY July 1952. E. I. and Arminda du Pont, Fred and Peggy Gentieu at marker set up for 125th Anniversary Celebration." On top of the marker is a vat used in the Eleutherian Mills refinery.
Typed on back: "150th ANNIVERSARY July 1952. E. I. du Pont points out to Fred Gentieu the vast Experimental Station opened in 1951." The DuPont Company operated research and development facilities at the Experimental Station site since 1906. ...
Typed on back: "150th ANNIVERSARY July 1952. E. I. du Pont with daughter Eleuthera. Hobby horse built for founder's son Henry by Brandywine Powdermen."