Boulder Dam [Recreation Area] - Lake Mead, Nevada and Arizona, 1939

23 photographs of Hoover Dam and Lake Mead and the recreation area later known as the Lake Mead National Recreation Area, Nevada and Arizona, 1939 February. Lake Mead was formed by Hoover Dam.本数据集包含23张拍摄于1939年2月的照片，取景范围涵盖美国内华达州与亚利桑那州境内的胡佛水坝（Hoover Dam）、米德湖（Lake Mead）以及日后被正式命名为米德湖国家休闲区（Lake Mead National Recreation Area）的休闲区域；米德湖系由胡佛水坝拦蓄形成。