"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG3Q-9FX : accessed 6 February 2017), Herman J Decoursey in household of George W Decoursey, Newtown, Bucks, Pennsylvania, United States; citing enumeration district (ED) ED 33, sheet 15A, family 299, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1320; FHL microfilm 1,375,333.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFBF-JSS : accessed 6 February 2017), J Herman Decoursey in household of George W Decoursey, Newtown, Bucks, Pennsylvania, United States; citing ED 39, sheet 1A, line 40, family 11, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1542; FHL microfilm 1,821,542.