凯文．柯立芝站在汽车使用的无线电设备旁 (摄于1924年总统选举期间)

出处: "Calvin Coolidge with Radio Equipment Used on Automobiles During the Campaign." National Photo Company Collection, 1924. Prosperity and Thrift: The Coolidge Era and the Consumer Economy, 1921-1929, American Memory collections, Library of Congress.