Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
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Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
Native American tribes lived in the local area for thousands of years before European colonization. This colonization brought horses which greatly improved life on the prairie. The steady eastward march of settlers pushed new tribes into the area.
The Corps of Discovery reached the head of the Milk River in May 1805. There, the river received its name, for "the water of this river possesses a peculiar whiteness, being about the colour of a cup of tea with the admixture of a tablespoonfull of milk."
After the Corps of Discovery, the next major event in the area was the arrival of Texas cattle coming to fatten up on the local grass after their long cattle drives. The cattle drives lasted from 1866 until the late 1880s.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (6), Wikipedia, U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.