Back caption: ""San Francisco-Oakland Bay Bridge. Looking over the west bay between San Francisco and Yerba Buena Island at twin suspension bridges, each 4,630 feet long, joined end to end and having at their junction a common anchorageconsisting of a great concrete monolith, topped by a steel shroud, which rises 282 feet above water and rests on bedrock 220 feet below low tide...Picture No. 10-A - Pub. by J.C. Bardell - San Francisco, California."