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When · Category
Mid Nineteenth Century
Mid Nineteenth Century extends Kayffa's When taxonomy under Century and Era Ranges.
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Mid Nineteenth Century
Mid Nineteenth Century is a reusable chronological classification under Century and Era Ranges. Use it when the asset, entity, collection, or region can be dated or interpreted through this broad period, range, season, or date-confidence lens. It should support browsing and filtering without replacing exact dates or named historical events.
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WhenCentury and Era RangesMid Nineteenth Century
Parent category: Century and Era Ranges
Usage
Use Mid Nineteenth Century when this reusable lens is visible, captioned, sourced, or editorially central enough to improve retrieval, interpretation, or review.
Exclusions
Do not use Mid Nineteenth Century for incidental mentions, weak visual guesses, or named records that should be modeled as Entities.