"New York State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K6SY-MWS : 3 March 2021), Cornelia Case in household of Freeman Case, E.D. 2, Duanesburg City, Schenectady, New York, United States; citing p. , line #24, family #272, county clerk offices, New York; FHL microfilm 503,207.
"New York State Census, 1865," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVNF-2JFJ : 8 March 2021), Cornealia Case in household of Charles Case, District 03, Duanesburg, Schenectady, New York, United States; citing Census, p. 37, citing multiple county Clerks; Warren and Lewis County Board of Supervisors; multiple counties in New York; Utica and East Hampton Public Libraries, New York.
"New York State Census, 1875," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNVM-X5W : 18 February 2021), Cornelia Mott in household of Tallman Mott, Duanesburg, Schenectady, New York, United States; citing p. 10, line 2, State Library, Albany; FHL microfilm 503,209.