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[Hagley Yard] 1874
Property Boundary Eleutherian Mills Hagley Foundation and Dilwyne Estate, 1971
Upper Brandywine Mill Seats, revised 1994
Henry Clay [Mill], 1998
DuPont Co. powder yards on Brandywine Creek
1903 Tracing 1889
A Primer on Waterwheels
Black Powder Manufacture
Map of Henry Clay-Rising Sun Lane area, circa 1900
[Hagley Yard] 1904
A Primer on Water Turbines
Brandywine Powder Mills, 1983
Powder Testers du Pont used...and gave away!
[Hagley Yard] 1834
Map, Plan-Mansion to Creek, 1986-02-18
Hagley Yard 1903
Black Powder Manufacture
1904 Survey [Upper Powder Yard]
Composite Map, 1983
Interview with John Gilbert Braun, 1973 April 17 [audio](part 2)
Interview with John Gilbert Braun, 1973 April 17 [audio](part 1)
Regulator clocks in antique shop photographs