"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MS16-N8C : accessed 15 Feb 2014), Joseph Fink, Precinct 7 Allegheny city Ward 5, Allegheny, Pennsylvania, United States; citing sheet , family 90, NARA microfilm publication T623, FHL microfilm 1241356.
"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MGH6-ZHF : accessed 16 Feb 2014), Leonard I Fink in household of Clara Fink, Pittsburgh Ward 8, Allegheny, Pennsylvania, United States; citing sheet , family 78, NARA microfilm publication T624, FHL microfilm 1375315.
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DNA Connections
It may be possible to confirm family relationships with Leonard 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 Leonard: