1880 Census: "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWF3-TNM : 15 July 2017), Sarah Hawk in household of William H Hawk, Wiconisco, Dauphin, Pennsylvania, United States; citing enumeration district ED 118, sheet 284C, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,255,124.
1900 Census: "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3SW-PGT : accessed 23 April 2020), Sarah Hawk in household of William Hawk, Lykens borough Ward East & West, Dauphin, Pennsylvania, United States; citing enumeration district (ED) 87, sheet 15B, family 303, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,403.
1910 Census: "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGHR-LNL : accessed 23 April 2020), Sarah T Hawk in household of William Hawk, Lykens East Ward, Dauphin, Pennsylvania, United States; citing enumeration district (ED) ED 101, sheet 25B, family 550, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1337; FHL microfilm 1,375,350.