Other Essex County districts of the Massachusetts House of Representatives: 1st, 2nd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th
^"Massachusetts Representative Districts". Sec.state.ma.us. Retrieved May 3, 2020.
^Massachusetts General Court, "Chapter 153. An Act Relative to Establishing Representative Districts in the General Court", Acts (2011)
^Commonwealth of Massachusetts, Elections Division. "State Representative elections: 3rd Essex district". PD43+. Retrieved May 3, 2020.
^David Jarman (July 30, 2019), "Upper legislative district ↔ lower legislative district correspondences: MA", How do counties, House districts, and legislative districts all overlap?, Daily Kos, State House Districts to State Senate Districts
^ a b"Massachusetts House of Representatives". Massachusetts Register. Boston: Adams, Sampson & Co. 1858. pp. 10–12.
^ a bCommonwealth of Massachusetts, Manual for the Use of the General Court. Boston. 1859 – via Internet Archive.{{cite book}}: CS1 maint: location missing publisher (link)
^ a bGeo. F. Andrews (ed.). "Representatives: Essex County". 1888 State House Directory. Official Gazette, Commonwealth of Massachusetts. Lakeview Press.
^Public Officials of Massachusetts: 1920. Boston Review.
^ a b1951–1952 Public Officers of the Commonwealth of Massachusetts. Boston.