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Sources

  1. U.S. Census, Columbia County, WI, 1880 Census.
  2. Dorothy Heinze Research of the Heinze Family, Phone Conversation with Gary Griggs, 3/29/2004.
  3. U.S. Census, Columbia County, WI, 1900 Census.
  4. U.S. Census, Columbia County, WI, 1910 Census.
  5. U.S. Census, Columbia County, WI, 1930 Census.
  6. Tomah (WI) Monitor-Herald Newspaper, Article about the 1942 Vandervort Picnic.
  7. Vera Purdy Wilde, Vera Purdy Wilde Research of the James R. Vandervort Family.
  8. Arlyn Bernhardt e-mail to VDV Gang, Descendants of James Robert Vandervort from Darryl VDV, 7/11/01.
  9. Monroe, Juneau, Jackson Counties Genealogical Workshop, Inc., "Monroe County (WI) Index to Birth Registrations, 1850-1944".
  10. U.S. Census, Monroe County, WI, 1910 Census.
  11. Obituary of Grandparent, Parent, Sibling, Spouse, Child or Grandchild.
  12. Obituary.
  13. Tomah (WI Journal Newspaper, LaGrange News Article, 12/6/1918.
  14. U.S. Census, Monroe County, WI, 1920 Census.
  15. U.S. Census, Monroe County, WI, 1930 Census.
  16. U.S. Social Security Death Index, Researched by Gary Griggs, 8/3/2009.
  17. Arlyn Bernhardt e-mail to VDV Gang
    , "Descendants of Isaacs Vandervort" report, e-mailed May 2016.
  18. U.S. Census, Monroe County, WI, 1900 Census.
  19. MyHeritage.com Website, Researched by Gary Griggs, 4/19/2021.
  20. Wisconsin State Census, Monroe County, WI, 1905 Census.
  21. Elton Heinze Conversation with Gary Griggs, 8/7/2002.
  22. Dorothy Heinze Research of the Heinze Family, Phone conversation with Gary Griggs, 3/27/2004.
  23. Gary Griggs Research of the Griggs, Pergande and Related Families.
  24. Obituary, email from Ronald Vandervort to Gary Griggs, 10/6/2020.
  25. Jim Zingler Research of the Zingler Family, Outline Descendant Report for Eva R. Vandervort, e-mailed to Vandervort Gang, 5/2/2016.
  26. Obituary of Grandparent, Parent, Sibling, Spouse, Child or Grandchild, email from Ronald Vandervort to Gary Griggs, 10/6/2020.