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World Trade Center facade |
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World Trade Center facade |
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World Trade Center |
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B-17 Flying Fortress |
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Northwest Building |
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World Trade Center (model) |
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World Trade Center |
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Operating side |
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From left to cutting table |
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Cutting room |
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Experimental Glass Plant |
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Experimental machine |
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Colburn patent |
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New plant construction |
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Toledo Glass Co. (exterior) |
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sheet glass cutting apparatus |
|
New plant construction |
|
Experimental Glass Plant |
|
Experimental Glass Plant |
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Experimental Glass Plant |