This folder contains correspondence, agreements, and other documents relating to the business of the Electric Tube Co. in New York City, which manufactured underground conductors for the Edison electric light system. Most of the correspondence is by John Kruesi, treasurer of the company.

Approximately 50 percent of the documents have been selected. The following categories of documents have not been selected: routine correspondence, such as letters relating to orders and to the shipment of goods; bills and receipts.