Image #539 (4.5" x 2.75"): "7-15-29. Lowering 100 ft. main boom from the last span traveler. Weight about 11 tons."; Image #540 (2.75" x 4.5"): "7-16-29. Paramount sound-picture truck on a lighter, preparing to take sound-movies of the bridge."; Image #541 (2.75" x 4.5"): "7-16-29. Same as above. Note the microphone."
