McCook was founded in 1925 cosisted of about 40 people and today still consists of about 40 people. Founded by a polish couple and became a farming community. General store, factory, post office and a church were the main structures.
I would keep a look out in the fields after a rain, arrowheads tend to pop up. The town itself is not that old but it wouldn't hurt to hunt around some old houses or structures(or where the buildings once stood) if you can get permission. Just watch out for critters, the town boasts of it large rattlesnakes and bob cat population.