dumbarton bridge

photographic slide Bob Walker Dec-87 Fremont shoreline Dumbarton Bridge approach - left to right at center SF Bay NWR, below Coyote Hills, above	photograph unknown October 28, 194 Open metal bridge on cememt pilings across expanse of water/San Francisco Bay holding piepline. Shore/land in distance. At the third piling from the bottom of the photo is a barge with two men...
photograph unknown 22-Apr-26 Caption on photo: "10313. H.H. Ag. Dumbarton Pipe Line Bridge -- looking west. 4-22-26." Back of photo: July 21, 1928. Photograph by City Engineer San Francisco. Pipeline...