The following are 5 free digitized directories found online for the cities and towns of Billerica, Chelmsford, Dracut, Tewksbury, Tyngsboro and Westford Massachusetts covering the years of 1896-1926 (incomplete), containing an alphabetical list of the inhabitants and business firms, streets, town offices, societies, churches and other miscellaneous matter. Directories can provide such information on an individual such as their employment and address during the year issued. They may also indicate whether they were renting or residing with somebody else at the time.
- 1896 Lowell Massachusetts suburban directory
- 1917 Lowell Massachusetts suburban directory
- 1921 Lowell Massachusetts suburban directory
- 1925-1926 Lowell Massachusetts suburban directory
- 1932-1933 Lowell Massachusetts suburban directory
