Find a Grave, database and images (https://www.findagrave.com : accessed 21 February 2021), memorial page for Isaac Plank Zook (3 Jul 1879–13 Aug 1946), Find a Grave Memorial no. 50963861, citing Locust Grove Cemetery, Belleville, Mifflin County, Pennsylvania, USA ; Maintained by Tom Whitehurst (contributor 47250352) .
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DNA Connections
It may be possible to confirm family relationships with Isaac 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 Isaac: