Mass. - Massachusetts Reports Jurisdiction: United States Dates covered: 1867- Since 1867, continuing from Allen's Massachusetts Reports. Published by the office of the Reporter of Decisions of the Massachusetts Supreme Judicial Court and the Appeals Court. REFERENCES: massreports.com Frequently need citation information? Try our search provider (works in most modern browsers) If you find an error, omission or if have a suggestion for a law report, legal periodical or abbreviation, we'd love to get your input!