Folder: S.F. Districts-Hunters Point-Shipyards-1940's.
Newscopy: "EXTERIOR OF ORDINANCE AND OPTICAL SHOP, HUNTERS POINT--'One of the most beautifully detailed industrial buildings...'".
Printed on back: "A periscope (inside the wooden case) being lifted up to the sixth floor Optical Shop for repair and calibration. How does all that glass get cleaned? Look closely near the corner and you will see an electircally operated two-man carrier suspended from the monorail above.".