(Research):"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X34V-K8L : accessed 17 April 2020), Marjorie R Poole in household of Edward Poole, Brunswick, Frederick, Maryland, United States; citing enumeration district (ED) ED 50, sheet 4B, line 58, family 90, 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:K7FC-WLD : 6 February 2020), Marjorie R Poole in household of Edward L Poole, Braddock Heights, Election District 24, Frederick, Maryland, United States; citing enumeration district (ED) 11-57, sheet 10B, line 64, family 206, 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 1549.