From the preface by James M. Kelley:
"The original record of the Births, Marriages and Deaths in Wilmington, prior to the year 1843, are contained in one volume, the binding of which was in a very poor condition, the leaves of which were loose and much worn on the edges. In 1895, it was decided to have the records copied, and I undertook the work, and on Jan. 1, 1896, I had copied all contained in the three volumes of the Births, Marriages and Deaths from 1730 to 1896. In March, 1897, it was voted to have additions made to the record of Deaths "which were very incomplete," from gravestones and family records and that the records should then be printed."
"I carefully examined the stones in the two cemeteries from which I secured about four hundred additional records, (these are marked with an asterisk *) which with those kindly furnished by individuals from family records, makes the Death Record appear more complete when compared with the record of Births."
For general information, see the overall page for Massachusetts Vital Records to 1850.