Mass. Gen. Laws ch. 234A § 14
On or before the first day of August of each year, each city and town that has not submitted a numbered resident file pursuant to section eleven of this chapter shall submit to the office of jury commissioner a typewritten list of the randomly selected prospective jurors from such city or town. This list shall be typed on special forms, supplied by the office of jury commissioner without cost, in order that the list will be suitable for conversion into a data processing file by the office of jury commissioner. The content and format of such list and the special forms shall be specified in the regulations of the jury commissioner. The cost of typing the special forms shall be paid by the city or town. The cost of preparing a data processing file from the typewritten list shall be paid by the office of jury commissioner.
Mass. Gen. Laws ch. 234A, § 14