"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3WP-9B6 : accessed 28 November 2015), Mary Bobb in household of W H Bobb, Division 12 Philadelphia city Ward 36, Philadelphia, Pennsylvania, United States; citing sheet 3A, family 39, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,241,477.
United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG31-DZJ : accessed 28 November 2015), Walter B Bobb in household of Mary A Bobb, Philadelphia Ward 36, Philadelphia, Pennsylvania, United States; citing enumeration district (ED) ED 898, sheet 4B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,375,420.
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