Primary Sources
- Orleans County Vital Statistics, Orleans County, Town of Medina, State of New York.
- 1901 Annual Report By Michigan Board of State Auditors. Original at University of Michigan.
- A History of Northern Michigan and Its People by Lewis Publishing Company (1912), University of Michigan.
- Michigan Biographies, 2 v. Lansing, Michigan Historical Commission, 1924, page 140, University of Michigan.
- Biographical History of Northern Michigan by B. F. Bowen, 1905. "John Caldwell" - at University of Michigan.
- United States Census for 1850 enumerated on September 23, town of Pendleton, New York, County of Niagara.
- United States Census for 1860 enumerated on June 13, town of Litchfield, Michigan, county of Hillsdale and 1870 on June 22.
- Michigan Manual published in 1899 by the State of Michigan. Original at Capital Area District Library, South Capitol, Lansing, Michigan.
- Michigan Manual published in 1901 by the State of Michigan. Original at University of Michigan and at Capital Area District Library (above).
Read more about this topic: John Caldwell (Michigan Politician)
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—Chauncey Wright (1830–1875)