↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWVB-GV2 : 15 July 2017), Mary Hooven in household of Levi Hooven, Jackson, York, Pennsylvania, United States; citing enumeration district ED 11, sheet 422A, NARA...
↑ "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3HH-KJS : accessed 30 November 2019), Mary Hooven, District 2 York city Ward 11, York, Pennsylvania, United States; citing enumeration district (ED) 201, sheet 7B, family 154, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,503.
↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGC5-LLP : accessed 30 November 2019), Mary Hooven in household of Levi Hooven, York Ward 11, York, Pennsylvania, United States; citing enumeration district (ED) ED 133, sheet 11B, family 235, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1435; FHL microfilm 1,375,448.
↑ "United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MNM7-SJ7 : accessed 30 November 2019), Mary Hooven in household of Levi Hooven, York Ward 11, York, Pennsylvania, United States; citing ED 140, sheet 5B, line 79, family 127, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1669; FHL microfilm 1,821,669.
↑ "United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHCX-GJF : accessed 30 November 2019), Mary Hooven in household of Levi Hooven, York, York, Pennsylvania, United States; citing enumeration district (ED) ED 115, sheet 2A, line 9, family 40, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2167; FHL microfilm 2,341,901.