On back: "SAN FRANCISCO-OAKLAND BAY BRIDGE; Walter G. Swanson; 500 Sansome St. - GA rfield 1415. File 900.11 B-12/AA. MOVEMENT NO. 5 - THE STEEL IS NOW DIRECTLY OVER THE JOINT AND IT IS ONLY NECESSARY FOR THE DERRICK CREW TO LOWER THE 50-FOOT SQUARE TUBE OF STEEL UNTIL IT SLIPS OVER THE JOINT PROVIDED FOR IT. BOLTS ARE SLIPPED INTO THE HOLES TO HOLD IT IN PLACE UNTIL THE RIVETING STARTS NEXT MONTH."
