"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MCTQ-BJ8 : 12 April 2016), Hulda French in household of Nathaniel French, Amsterdam, Montgomery, New York, United States; citing family 773, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"New York State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K6SK-MJL : 5 February 2018), Hulda French in household of Nathaniel C French, E.D. 2, Johnstown, Fulton, New York, United States; citing p. 374, line #36, family #399, county clerk offices, New York; FHL microfilm 462,875.