"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9TV-P8B : accessed 29 August 2015), Waldo Zoller in household of Henry Zoller, Weston town, Middlesex, Massachusetts, United States; citing sheet 14A, family 304, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,668.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4FY-KF3 : accessed 29 August 2015), Waldo Zoller, Sudbury Town, Middlesex, Massachusetts, United States; citing enumeration district (ED) 9-496, sheet 3B, family 64, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 1617.
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DNA Connections
It may be possible to confirm family relationships with Waldo by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Waldo: