"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M34L-5T1 : accessed 25 December 2020), Ellen Mckenna in household of John Mckenna, Carroll Townshi,p Precinct 1, (excl. Monongahela city), Washington, Pennsylvania, United States; citing enumeration district (ED) 126, sheet 14A, family 248, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,493.
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