Palm Springs District, Riverside County, Calif., 1939

23 photographs of Joshua trees, cactus, rock formations, a pool of water, palm trees, citrus trees, and mountains in Riverside County, California, 1939 March.本数据集包含1939年3月拍摄于美国加利福尼亚州里弗赛德县（Riverside County）的23张摄影照片，拍摄对象涵盖约书亚树（Joshua Tree）、仙人掌、岩层、水塘、棕榈树、柑橘类树木与山地。