Changing a 4 to a 5: The Detection of a Forged Date on a Lincoln Pardon
955 views · Published 20 November 2013 · 23:41 · Indexed 20 October 2026
Channel: US National Archives · 2013 · Education
Kathy Ludwig and Jennifer Herrmann discuss the visual and chemical analysis of a Lincoln pardon that was altered by Thomas Lowry.
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