On back: "SAN FRANCISCO-OAKLAND BAY BRIDGE; Walter G. Swanson. 500 Sansome St. - GA rfield 1415; 900.11 B-12/AA. The most westerly tower of the San Francisco-Oakland Bay Bridge on the bay shore of San Francisco, viewed from the bridge cable anchorage on Rincon Hill. Yerba Buena Island looms up in the mid-bay with Oakland dimly visible in the background."