Map displaying the distances objects were thrown in a corning mill and dry house explosion in the Upper Yard (Eleutherian Mills) along with locations of buildings and the structural damage they received from the blast.
Illustration copied from post card. Caption on card: "The Eagle glaze mill, the oldest gunpowder mill in America. Erected 1802 on the Brandywine, Wilmington, Delaware, USA by E.I. du Pont de Nemours Powder Co., manufacturers of Sporting and Industrial Explosives. The pioneer powder makers of America."
Becker, Chandler (contributor), Macklem, John W., 1867-1948 (photographer)
Description
Note by Macklem dated 1928 March 9: "In the background can be seen the residence of E.I. du Pont de Nemours, erected by him early in the last century and occupied by him as a home until the time of his death, after which his second son Henry du Pont lived here until his death in August 1889. The property now belongs to the estate of Col. Henry A. du Pont, the oldest son of Henry du Pont."