Photographic copy of sheet two of two of May 1930 linen drawing. Located in map drawer and-147;Dand-148; in room 5009 at the National Museum of American History, Smithsonian Institution, Archives Center, Work and industry Division, Washington, ; 1930 DRAWINGS OF MISSISSIPPI RIVER BRIDGES FROM ST. LOUIS TO NEW ORLEANS SHOWING ELEVATIONS AND CLEARANCES DIAGRAMS. - Huey P. Long Bridge, Spanning Mississippi River approximately midway between nine and twelve mile points upstream from and west of New Orleans, Jefferson, Jefferson Parish, LA; Modjeski, Masters and Chase, Inc., engineer; Siems-Hel
Photographic copy of sheet two of two of May 1930 linen drawing. Located in map drawer and-147;Dand-148; in room 5009 at the National Museum of American History, Smithsonian Institution, Archives Center, Work and industry Division, Washington, ; 1930 DRAWINGS OF MISSISSIPPI RIVER BRIDGES FROM ST. LOUIS TO NEW ORLEANS SHOWING ELEVATIONS AND CLEARANCES DIAGRAMS. - Huey P. Long Bridge, Spanning Mississippi River approximately midway between nine and twelve mile points upstream from and west of New Orleans, Jefferson, Jefferson Parish, LA; Modjeski, Masters and Chase, Inc., engineer; Siems-Helmers, Inc., builder; American Bridge Company, builder; McDonald Engineering Company, builder; McClintic-Marshall Corporation, builder; Paul M. Brignac Electric and Machine Company, builder; Jack Harris and National Construction Company, builder; Calloway, Deborah, transmitter; Coco and Company, contractor
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