1951 Map of De Soto

South of the river, the terrain transitions into a network of creeks, including Kill Creek, Camp Creek, and Cedar Creek, where local history is anchored by rural landmarks like North Lone Elm School and the Grange Hall. Newer developments are visible in purple revisions from the 1970s, including the New Olathe Lake and the Cedar Airpark, reflecting the gradual expansion of the area surrounding Olathe and Lexington townships during the postwar era.