The Middlesex Company was incorporated in 1830. The treasurers have been William D. Stone, 1830; Samuel Lawrence, 1840; R.S. Fay, 1857; George Z. Silsbee, 1882. The agents have been James Cook, 1830; Nelson Palmer, 1845; Samuel Lawrence, 1846; O.H. Perry, 1848; William T. Mann, 1851; Josiah Humphrey, 1852; James Cook, 1858; O.H. Perry, 1858; G.V. Fox, 1869; William C. Avery, 1874; O.H. Perry, from June, 1882. O. Saunderson, superintendent. The company makes indigo blue coatings, cassimeres, police, yacht, and cadet cloth, ladies' sackings, beavers, and shawls.
The Suffolk Manufacturing Company was incorporated January 17, 1831. The proprietors of the Tremont Mills were incorporated March 19, 1831. The two were consolidated in 1871. The treasurers of Suffolk Manufacturing Company were John W. Boott, 1831; Henry Hall, 1832; Henry V. Ward, 1857; Walter Hastings, 1865; William A. Burke, 1868; James C. Ayer, 1870. The treasurers of the proprietors of the Tremont Mills were William Appleton, 1831; Henry Hall, 1832; Henry V. Ward, 1857; Walter Hastings, 1865; William A. Burke, 1868; James C. Ayer, 1870. The treasurers of Tremont and Suffolk Mills have been James C. Ayer, 1871; John C. Birdseye, 1872. The agents of Suffolk Manufacturing Company were Robert Means, 1831; John Wright, 1842; Thomas S. Shaw, 1868.
The agents of the proprietors of the Tremont Mills were Israel Whitney, 1831; John Aiken, 1834; Charles L. Tilden, 1837; Charles F. Battles, 1858; Thomas S. Shaw, 1870. The agent of Tremont and Suffolk Mills is Thomas S. Shaw, appointed August 19, 1871. These mills make jeans, cotton flannels, drillings, sheetings, shirtings and print cloth.
The Lawrence Manufacturing Company was incorporated in 1831. The treasurers have been William Appleton, 1831; Henry Hall, 1832; Henry V. Ward, 1857; T. Jefferson Coolidge, 1868; Lucius M. Sargent, 1880. The agents have been William Austin, 1830; John Aiken, 1837; William S. Southworth, 1849; William F. Salmon, 1865; Daniel Hussey, 1869; John Kilburn, 1878. The company makes shirtings, sheetings, cotton flannels, and cotton and merino hosiery.