
White terracotta banding and trim distinguish this Beaux-Arts brick box, which resembles a post office. Built to house repeater equipment for Denver–Kansas City long distance telephone cable, it was donated in 1966 by the American Telephone and Telegraph Company to the Prowers County Historical Society. The society converted it to a museum named for cottonwood groves along the Arkansas River. Many of these trees, some with circumferences of 18 feet, were cut down for building material and fuel, but some of the monarchs survive.