01/06/1902 Mallory, Walter Seeley to Gabel, J D
(New Jersey and Pennsylvania Concentrating Works; Benson, Orville) Labor; Tools and machinery
[LM243]  Company Records Series -- New Jersey and Pennsylvania Concentrating Works -- Letterbooks -- Walter S. Mallory Letterbooks: LM-243 (July 1901-June 1902)
[LM243566A; TAEM 154:207]
Courtesy of Thomas Edison National Historical Park.