This folder contains correspondence and other documents relating to Edison's dealings with Armington & Sims, manufacturer of steam engines for Edison central stations. Much of the correspondence is by Gardiner C. Sims, superintendent of the company. Some of the documents are partially illegible because of water damage.

Approximately 90 of the documents have been selected. Routine correspondence relating to bills, orders, and the shipment of goods has not been selected.

Courtesy of Thomas Edison National Historical Park.