Name and boundary changes of cities and towns. (Note: in New England, a "town" is a political subdivision of a county, not merely a populated place.) Each entry in this file has a date, two names, and a "transaction". The latter is a code for the type of event and comes in two flavors, according to which name is given first. Each event is entered twice, once with each name listed first. Some entries have remarks further explaining the locality. The entries within each county are listed alphabetically by the first name. The entries have the following patterns.
| New | was | Old (change of name, or foundation if "Old" is "---") | |
| Old | became | New | |
| Donor | part to | Donee (land transferred from one town to another) | |
| Donee | part fr | Donor | |
| New | came fr | Old (new town created from part of another) | |
| Old | part as | New | |
| Little | joined | Big (town merged into another, or to another state) | |
| Big | annexed | Little | |
| Little | got fr | State | |
| Town1 | bound | Town2 (exchanging land) | |
| Old | gone | (town abolished) |