The San Francisco Bay Area circa 1931. "Earth-moving equipment and trucks." Our second look at this diorama of dirt, and a glimpse of the surrounding terrain. 8.5 x 6.5 inch glass plate by Christopher Helin. View full size.
  BUY PRINT    The San Francisco Bay Area circa 1931. "Earth-moving equipment and trucks." Our second look at this diorama of dirt, and a glimpse of the surrounding terrain. 8.5 x 6.5 inch glass plate by Christopher Helin. | Click image for Comments. | Home | Browse All Photos