United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M37T-ZJ9 : accessed 27 November 2018), Johanna Holden in household of John Holden, Philadelphia city Ward 20, Philadelphia, Pennsylvania, United States; citing enumeration district (ED) 426, sheet 2A, family 21, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,462.
United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGWX-2D3 : accessed 9 July 2021), Johanna Holden in household of John Holden, Philadelphia Ward 20, Philadelphia, Pennsylvania, United States; citing enumeration district (ED) ED 352, sheet 2B, family 36, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1394; FHL microfilm 1,375,407.