Michael Joseph O'Brien
type: Person
description: American historian, 1870-1960
birth date: 1870-00-00
death date: 1960-00-00
has occupation: historian
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confidence:
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    components:
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      unique citations: 3
      unique citations norm: 0.001
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citations:
  source: Virtual International Authority File
  stated in qid: Q54919
  retrieved: 2023-03-26
citations:
  source: Integrated Authority File
  stated in qid: Q36578
  retrieved: 2025-03-23
citations:
  source: Library of Congress Authorities
  stated in qid: Q13219454
  retrieved: 2025-03-23
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  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-06T03:30:33.555266Z
  entity updated at: 2026-05-03T16:20:22.557058+00:00Z
  entity created at: 2026-05-03T13:52:53.059949+00:00Z