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Charles I. du Pont to Cousin [Francis G. du Pont], undated
Maximum Fabrication of Powder at the Works of E. I. du Pont & Co.
The Old Mill
Day Book, Production, E. I. du Pont de Nemours and Company, 1817
Finishing Mill, Dupont's Powder Works
Cost of Manufacturing & Selling Powder Inclusive of Saltpetre, Soda & Sulphur
Modern incorporating mills (rolling mills) on Brandywine Creek
Correspondence, Grinnell, Minturn & Co. to Phillips, Shaw & Lowther, 1857-08-06
Industrial Power Sources of the Nineteeth Century: The Hagley Example
Memo with dates regarding du Pont family and company, 1882-1927
Map, Survey, and Remarks on Constructing the Lower Yard, 1836, n.d.
W.F. Lynch and group of pipefitters
Santa Cruz Gunpowder : Mining, Sporting and Hercules Powder
Account book, 1858-1902
Outside Pipe and Electric Line maps, Brandywine Works, 1919-05-08
Powder mills on Brandywine Creek on Eleutherian Mills property in Wilmington, Del.
Lower Yard powder works on Brandywine Creek (distant view)
Powder mills on Brandywine Creek on Eleutherian Mills property in Wilmington, Del.
Powder mills on Brandywine Creek on Eleutherian Mills property in Wilmington, Del.
Powder mills on Brandywine Creek on Eleutherian Mills property in Wilmington, Del.
Hagley shop and Breck's Mill on Brandywine Creek in Wilmington, Del.
Memorandum of Cost of Transportation of Powder at Hagley Yard, 1872
Pierre A. Gentieu to A.D. [Alfred duPont] LeCarpentier, February 22, 1912
Brandywine Mills closing letter
View of the Lower Yard at DuPont's Powder Mills near Wilmington, Delaware

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