"England and Wales Birth Registration Index, 1837-2008," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2XD2-W8X : 1 October 2014), David Harley Adams, 1876; from "England & Wales Births, 1837-2006," database, findmypast (http://www.findmypast.com : 2012); citing Birth Registration, Edmonton, Middlesex, England, citing General Register Office, Southport, England.
"England Births and Christenings, 1538-1975," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JSC7-1VW : 30 December 2014, David Harley Adams, ); citing Goffs Oak, Hertford, England, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 1,951,822.
"England and Wales Census, 1881," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q27Z-VSGK : 20 August 2016), David H Adams in household of David Venables, Cheshunt (Herts), Middlesex, England; from "1881 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing p. 2, Piece/Folio 1398/77, The National Archives, Kew, Surrey; FHL microfilm 101,774,593
"England and Wales Census, 1891," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QXXF-TZM : 23 October 2017), David Adams in household of Frances E Adams, Cheshunt, Middlesex, England; from "1891 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 12, Middlesex county, subdistrict, The National Archives of the UK, Kew, Surrey.
"England and Wales Census, 1901," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:X96B-6S1 : 8 April 2016), David Adams in household of William Adams, Cheshunt (Herts), Middlesex, England; from "1901 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing Cheshunt subdistrict, PRO RG 13, The National Archives, Kew, Surrey.
"England and Wales Marriage Registration Index, 1837-2005," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:263P-5V9 : 13 December 2014), David Harley Adams, 1902; from “England & Wales Marriages, 1837-2005,” database, findmypast (http://www.findmypast.com : 2012); citing 1902, quarter 2, vol. 3A, p. 836, Ware, Hertfordshire, England, General Register Office, Southport, England.
"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XWH9-YRX : 2 August 2017), David Harley Adams, Cheshunt, Cheshunt, Middlesex, England; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.
"England and Wales Death Registration Index 1837-2007," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVCM-F82H : 4 September 2014), David H Adams, 1945; from "England & Wales Deaths, 1837-2006," database, findmypast (http://www.findmypast.com : 2012); citing Death, Ware, Hertfordshire, England, General Register Office, Southport, England.