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| Date: | |
|---|---|
| Description: | Plate Steel Spiral Casing for 70,000 horse-power Niagara Falls hydraulic turbine unit at the Allis-Chalmers Manufacturing Company erecting shop. The castin... |
| Date: | 1942 |
|---|---|
| Description: | Poster promoting the use of scrap metal for war materials. Features illustrations of guns, tanks, ships and other armaments that could be produced using sc... |
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