Image #471 (2.75" x 4.5"): "Progress. Ready to place the last 87 1/6" bottom chord section."; Image #472 (2.75" x 4.5"): "6-21-29. Ready for the last or closing bottom chord sections."; Image #473 (4.5" x 2.75"): "6-21-29. From below. West cantilever, below. East cantilever, above.";Three 4.5" x 2.75" B/W photos numbered 471, 472, 473
Image #474 (4.5" x 2.75"): "6-21-29. Erecting the last bottom chord section L19' L21', north truss, east half of suspended span."; Image #475 (2.75" x 4.5"): "6-21-29. Connecting the closing bottom chord at L21'."; Image #476 (2.75" x 4.5"): "6-21-29. Closing B.C. joint L21'. Note 6" [diameter] pin and slotted hole with 7" movement for adjustment, temperature, etc.";Three 4.5" x 2.75" B/W photos numbered 474, 475, 476
