The Otis Company of Ware Massachusetts was founded by James W. Otis in 1839 with capital of $350,000. It purchased a part of the property of the Hampshire Manufacturing Company that lay north of the Ware River, and at the time of its incorporation in 1840, the company employed 211 people, later swelling to a workforce of over 1,300. A manufacturer of textiles, including checks, denims, and cotton underwear, the company operated three mills, including one in Palmer (Three Rivers).
From the guide to the Otis Company Records MS 310., 1846-1847, (Special Collections and University Archives, University of Massachusetts Amherst Libraries)