Essex Company Offices and Yard
 The Essex Company Offices and Yard at 6 Essex Street in Lawrence Massachusetts are the historic headquarters of the Essex Company which was responsible for Lawrence's founding in 1847 and development in the 19th century. These facilities were built in 1883-84 and consist of a street-facing office building and four others: a carpenter's shop foundry garage and storage building. They were designed by Hiram Mills the Essex Company's chief engineer.