"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDMK-T7B : accessed 2 March 2017), Huldah M Chandler in household of Hartwell P Chandler, Zearing, Story, Iowa, United States; citing ED 195, sheet 4B, line 86, family 115, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 515; FHL microfilm 1,820,515.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG9X-MDY : accessed 2 March 2017), Huldak M Chandler in household of Hartwell P Chandler, Lincoln, Story, Iowa, United States; citing enumeration district (ED) ED 191, sheet 5A, family 117, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 424; FHL microfilm 1,374,437.