這張在1869年堪薩斯州托貝卡市的鳥瞰圖，可以讓你對堪薩斯平原有一點概念

出處: Ruger, A. "Bird's eye view of the city of Topeka, the capital of Kansas 1869. Drawn by A. Ruger." Chicago Lithographing Co., 1869. Map Collections: 1544-1999, Library of Congress.