Mark Ormsby is a physicist at the National Archives in Washington, D.C.
17:41
At a live event in Washington, Ira talks to restoration experts about the science of preserving America’s founding documents.
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| AnalyticsSyncHistory | 1 month | No description |
| ARRAffinityCU | session | No description available. |
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| f | never | No description available. |
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| li_gc | 2 years | No description |
| loglevel | never | No description available. |
| msToken | 10 days | No description |