Incoming Resources
- Merrimac River Press, Tyngsborough, MA, c1995
- Tyngsborough Bicentennial Committee, Tyngsborough, MA, 1976
- Merrimac River Press, Tyngsborough, MA, 1982
- The Association, Tyngsborough, MA, 1896-1959
- Tyngsborough Historical Productions, Tyngsborough, MA, 2015