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As of November 2026
First era: trading and land. Wealth on this ground begins as other people's money passing over it: the treaty-era valley chiefs (Tribes leg) and the first entrymen. John McKnight entered roughly 600 acres and settled section 11 in 1834, "latterly lent money" on Chapman's telling (pp. 827–828) — the ground's first fortune is land plus informal credit. John Laidlaw's sketch is the era's type specimen, and it prints in its two accounts, unmerged, in the Industrial article below: Chapman's 610 acres accumulated from $175, Howard's 580 from $50.
Second era: industrial. Mills, then dairy, then grain. The Bancroft brothers' saw-and-grist mill of 1856, capacity 25 barrels a day, stands at the head of the Businesses leg's mill line; the creamery line runs from the nineteenth-century Moon creamery question through Crystal Springs Creamery Co., one of five firms in Polk's 1916–17 listing, to the Martin plant of 2017. Henry S. Plumb's general store of 1870 opens with $2,000 of stock (Chapman, p. 834) — trade sized in stock, not in sales, because that is the figure somebody published.
Third era: the philanthropy dynasties — tested, and found absent as dynasties. The classic county pattern, in which a mill fortune becomes a named foundation, does not occur on this ground in the record reached. What occurs instead is measured in the Philanthropy article below: register-scale foundations with no named origin fortune. The era prints as a heading with a negative finding under it, which is the honest shape of it.
Fourth era: modern. The twentieth century's money here is salary, trade and the highway strip; the directory record thins (the Businesses leg's empty band, 1930–89, is itself an open gap), and no sketch in the banked set sizes a modern family fortune. Under the living-persons rule stated at L17·8, the modern era prints as company roles and filings, in the Modern Fortunes article.
Fifth era: the present.That is the era structure at this ground's true size: five eras, the middle one hollow, the last one institutional.
Sources:
- Banked Notable People, Businesses, Farms & Agriculture sketches (McKnight, Chapman pp. 827–828; Laidlaw; Bancroft mills; Plumb, p. 834; Polk 1916–17 firm list); this history (IRS register sums, in bands).
- Companion articles of this section: Industrial Fortunes; Philanthropy Turn; Modern Fortunes.