06/24/1891 New Jersey and Pennsylvania Concentrating Works to Perry, William S
(Ogden Ore Separating Plant) Shipping and materials handling; Production difficulties and adjustments; Ore concentrate
[CJ003]  Company Records Series -- New Jersey and Pennsylvania Concentrating Works -- Administrative and Financial Records: Correspondence (1891)
[CJ003AEG; TAEM 149:367]
Courtesy of Thomas Edison National Historical Park.