This folder contains correspondence, agreements, and other documents relating to the formation and operation of the Edison Machine Works, Goerck Street, New York City. Formed in 1881, the Edison Machine Works manufactured dynamos and large electric motors for the Edison electric light system. Included also are the company by-laws and information on the remodeling of the Goerck Street buildings. Some material concerns the relative merits of Porter-Allen and Armington & Sims steam engines as components of the Edison system. There is also a comprehensive financial report, dated November 1, 1881.

Approximately 70 percent of the documents have been selected. The following categories of documents have not been selected: correspondence from suppliers of mica; routine bills and receipts.