"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8J9-1VR : 12 April 2016), Horace Hawley, New York, United States; citing p. 278, family 2179, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,460.
"New York State Census, 1875," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNJZ-NJQ : 30 June 2016), Horace Hawley, Brooklyn, Kings, New York, United States; citing p. 6, line 9, State Library, Albany; FHL microfilm 1,930,217.
"Connecticut Deaths and Burials, 1772-1934," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F7VN-F4X : 3 December 2014), Horace Hawley, 06 May 1889; citing , reference 26; FHL microfilm 3,336.
"Connecticut Deaths and Burials, 1772-1934," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F785-NPB : 3 December 2014), Horace Hawley, 06 May 1889; citing Guilford, Connecticut, reference ; FHL microfilm 3,138.
Find A Grave: Memorial #35100922 (accessed 13 December 2015), Horace Hawley, 1889; Burial, Guilford, New Haven, Connecticut, United States of America, Alderbrook Cemetery
"New York, New York City Municipal Deaths, 1795-1949," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2WFG-H25 : 20 March 2015), Horace Hawley in entry for Mary Amelia Nelson, 08 May 1907; citing Death, Brooklyn, Kings, New York, United States, New York Municipal Archives, New York; FHL microfilm 1,324,144.