San Gabriel Dam construction, showing two men on a machine, 1936

Photograph of San Gabriel Dam construction, showing two men on a machine, 1936. Two men in work clothes and hats lean against the large machine which surrounds them. Blocks of cement stabilize a leg of the machine on the right. Jagged hills can be seen in the background.1936年圣盖博水坝（San Gabriel Dam）的施工照片，画面中两名男子身处一台大型机械之上。二人身着工装、头戴工作帽，倚靠在将他们环绕的巨型机械旁；机械右侧的支腿由混凝土块加固，背景可见崎岖起伏的山丘。