Statistics for occurrence #1 of “Chelmsford” in chapter 1 of Medford Historical Society Papers, Volume 7.:

...culties with which this eighteenth century enterprise had to contend in the early years of its nineteenth century history. Nor were these all. With the exception of the guard locks at Billerica and Chelmsford , which, of hammered granite, were equalled by nothing then in our country, the various locks and aqueducts were constructed of wood, and necessarily perishable. The aqueduct at Shawsheen river was ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Chelmsford (Canada) 0 0 0 0 0 user votes
Chelmsford (Massachusetts, United States) 0 0 0 0 0 user votes
Chelmsford (United Kingdom) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.