Peace talks in Clark County bring temporary calm to the Missouri-Iowa border after a years-long dispute about the exact location of Missouri’s northern boundary line. The US Supreme Court hands down its decision on the precise border in 1851, according to a history from The University of Richmond. People wait to enter the US Supreme Court building for the swearing-in of Justice Hugo Black in this photo taken Oct. 4, 1937.

Photo credit: Harris & Ewing. Library of Congress.