Amsden, O. B.
| Role | Title | Holding Repository | |
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| creatorOf | Nicholson, H. H. Report on the properties of the Hamilton Gold Mining & Milling Co., Summit County : with a letter from O.B. Amsden / by H.H. Nicholson. | Colorado School of Mines, Arthur Lakes Library |
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| associatedWith | Nicholson, H. H. | person |
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