"New York, State Census, 1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:K9LY-L1T : accessed 7 October 2015), Henry Darling, Hopewell, Ontario, New York, United States; from "New York, State Census, 1915," database and images, Ancestry (http://www.ancestry.com : 2012); citing p. 01, line 45, state population census schedules, 1915, New York State Archives, Albany.
"New York, State Census, 1925," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:K91Y-KCD : accessed 7 October 2015), Henry B Darling, Hopewell, A.D. 01, E.D. 02, Ontario, New York, United States; from "New York, State Census, 1925," database and images, Ancestry (http://www.ancestry.com : 2012); citing state population census schedules, 1925, p. 5, line 38, New York State Archives, Albany.
Source: S9 "United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4RY-J7S : accessed 7 October 2015), Henry B Darling in household of Emmett T Wilkinson, Hopewell, Ontario, New York, United States; citing enumeration district (ED) 0035, sheet 5B, family 131, line 95, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1631; FHL microfilm 2,341,365.
"New York, County Marriages, 1847-1848; 1908-1936," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:V6H5-883 : accessed 7 October 2015), Henry B Darling and Jennie May Wilkinson, 02 Apr 1930; citing , New York, United States, county offices, New York; FHL microfilm 1,007,027.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KQGG-JK9 : accessed 7 October 2015), Henry Darling, Hopewell Town, Ontario, New York, United States; citing enumeration district (ED) 35-43, sheet 7A, family 124, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 2707.
Source: S17 "United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JKKY-N2W : accessed 7 October 2015), Henry B Darling, 11 Dec 1996; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).