"United States Census, 1900," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:M9Y6-T2X : accessed 6 May 2017), Andrew Furlong, Precinct 3 Boston city Ward 13, Suffolk, Massachusetts, United States; citing enumeration district (ED) 1342, sheet 9A, family 167, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,681.