"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMZV-FSL : accessed 2 August 2015), Harold P Dyer, Precinct G Cleveland City Ward 19, Cuyahoga, Ohio, United States; citing sheet 5B, family 119, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,241,255.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLX5-ZVR : accessed 2 August 2015), Harold P Dyer, Cleveland Ward 25, Cuyahoga, Ohio, United States; citing enumeration district (ED) 385, sheet 7A, family 145, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,375,189.
The Genealogy and History of the Ingalls Family in America: Author: Burleigh, Charles: Publication: Malden, Middlesex, Mass.: Geo. E. Dunbar, 1903: Note: NS340613: Source Media Type: Book: Master Listing Source: Y
Illinois Marriages, 1763-1900: Author: Family Tree Legends Records Collection: Publication: (Online Database). Pearl Street Software, 2004-2005.: Note: NS176493: Source Media Type: Internet: Master Listing Source: Y
It may be possible to confirm family relationships with Harold by comparing test results with other carriers of his Y-chromosome or his mother's 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 DNA with Harold: