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1831

McCormick Reaper
Society: ASABEMain Category: Agricultural & BiologicalSub Category: Equipment, Harvesting and BalingEra: 1830-1839DateCreated: 1831McCormick FarmRaphineState: VAZip: 24472Country: USAWebsite: http://www.asabe.org/awards-landmarks/asabe-historic-landmarks/mccormick-reaper-4.aspxCreator: McCormick, Cyrus Hall

McCormick was born on the 620-acre farm known historically as “Walnut Grove Farm” in 1809.  He built the first practical grain reaper, which was successfully demonstrated in a field of oats owned by John Steele in nearby Steeles Tavern in 1831.  

YearAdded:
1972
Image Credit: Courtesy of the Shenandoah Valley Agricultural Research and Extension Center.Image Caption: The McCormick reaper was first demonstrated at the Walnut Grove Farm in Virginia.Era_date_from: 1831
Borden Base Line
Society: ASCEMain Category: CivilSub Category: Boundaries & SurveysEra: 1830-1839DateCreated: 1831South DeerfieldState: MACountry: USAWebsite: http://www.asce.org/Project/Borden-Base-Line/Creator: Paine, Robert Treat , Borden, Simeon

The Borden Base Line is a 39,009.73 feet (7.42 miles ) survey line through the State of Massachusetts. The line was the first project of its kind undertaken in America and its establishment was the key element for Massachusetts pioneering mandate to survey the entire state. 

The challenge was to use trigonometrical principles, instead of astronomical observation alone, to provide greater accuracy in surveying large areas.

YearAdded:
1981
Image Credit: Public Domain (Copyright Exp.)Image Caption: An 1871 map of Massachusetts highlighting the Borden Base LineEra_date_from: 1831
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