Company Records Series -- New Jersey and Pennsylvania Concentrating Works -- Administrative and Financial Records
Labor & Material Accounts (1893-1895)
This account book covers the period April 1893-June 1895. It details the labor and material expended in construction, operation, and plant alterations. The book contains 318 numbered pages. Only one page has been selected: an undated accounting of Edison experiments involving ore brick manufacture, the elevator, and automatic grease cups.
Courtesy of Thomas Edison National Historical Park.