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Browsing by Subject "Box # = 21"
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #494-A
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #494-B
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #494-C
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #495
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #498
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #500
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #501
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #504
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #505
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #508
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #508-A
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #509
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #510
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #616
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #621
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #622
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US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #625
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