11. CALIFORNIA-TYPE DEPRESSION BEAM: Photocopy of...  family photo

11. CALIFORNIA-TYPE DEPRESSION BEAM: Photocopy of...

11. CALIFORNIA-TYPE DEPRESSION BEAM: Photocopy of photograph showing a California-type depression beam positioned in its yokes. A car would approach the beam moving towards the camera. Note the open ... show more

11. CALIFORNIA-TYPE DEPRESSION BEAM: Photocopy of photograph showing a California-type depression beam positioned in its yokes. A car would approach the beam moving towards the camera. Note the open access cover, pulleys, counterweight hatchcover, and the wooden construction of the beam. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA
4 x 5 in.
  • Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey

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Photo provided courtesy of the United States Library of Congress.