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Tri-State Marker

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The Tri-State-Marker is the place where Kansas, Oklahoma, and Missouri meet. More impressive is the manpower and time that it took to map the area in 1857. An astounding 800-man expedition spent half-a-year surveying just 40 miles. In 1938, a stack of stones was used to mark a spot that was thought to be the tri-state area but the location was erroneous. This mistake wasn't corrected until 2004 when the new plaque was set into the ground 50 feet east of the old monument.

Member Photos

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April 21, 2022
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Original Marker
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New marker placed 2004
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Historical info