(Research):https://www.findagrave.com/memorial/27467198/edith-marie-lawson
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6QG-HQH : accessed 31 January 2017), Edith M Barnes in household of Harry L Barnes, Mount Pleasant, Frederick, Maryland, United States; citing ED 80, sheet 4A, line 21, family 65, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 673; FHL microfilm 1,820,673.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X34J-6GP : accessed 31 January 2017), Edith M Barnes in household of Harry G Barnes, Liberty, Frederick, Maryland, United States; citing enumeration district (ED) ED 25, sheet 12A, line 33, family 7, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 874; FHL microfilm 2,340,609.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K7F4-1PX : accessed 31 January 2017), Edith Barnes in household of Harry T Barnes, Election District 2, Frederick, Maryland, United States; citing enumeration district (ED) 11-20, sheet 15A, line 23, family 309, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1548.