Image #429 (2.75" x 4.5"): "6-11-29. Lifting 500 ton capacity hydraulic jack by its 12 1/2" [diameter] plunger to test the section."; Image #430 (2.75" x 4.5"): "6-12-29. Frame for testing hydraulic jacks. Capacity about 50 tons."; Image #431 (2.75" x 4.5"): "6-13-29. Progress. West cantilever (left) complete to U17 L17. Right (east) arm to L16."; Image #432 (2.75" x 4.5"): "6-12-29. Looking east from south of Pier 5.";Four 4.5" x 2.75" B/W photos numbered 429, 430, 431, 432
