"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9J5-ZS4 : accessed 19 December 2017), Mary Ryan in household of Dennis Ryan, Precinct 1 Jersey City Ward 3, Hudson, New Jersey, United States; citing enumeration district (ED) 93, sheet 19B, family 377, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,976.
