'The Deacon's Masterpiece' by Oliver Wendell Holmes is about 6 minutes long. Not directly about history, but the story is set in America and spans 100 years. Some opportunities for different voices/accents, for instance English for 'Georgius secundus', and regional for 'the settlers' ellum', and the voice of the parson at the end. And of course the Deacon.
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What's 'u.i.l.'?
Ian