"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MM6B-KDJ : accessed 20 August 2017), Clara Calkins in household of Frank Calkins, Woodville Township Woodville village, Sandusky, Ohio, United States; citing enumeration district (ED) 91, sheet 11A, family 188, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,318.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGS8-YYD : accessed 20 August 2017), Clara Calkins in household of Frank Calkins, Texico, Curry, New Mexico, United States; citing enumeration district (ED) ED 55, sheet 7B, family 180, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 914; FHL microfilm 1,374,927.