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Cheyenne Helicopter
B-17 Flying Fortress
World Trade Center
Helping to mold victory
"Rosie the Riveter"
World Trade Center facade
World Trade Center
No. 5000
Forest of bubbles
Colburn patent
Experimental Glass Plant
Toledo Glass Co. workers
Experimental machine
Plexiglas dome
Technical Building
B-29 assembly line
Inspection time!

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