O’Brien, Jack – Papers
New York University Libraries — Tamiment Library & Wagner Labor Archives — NY (1861–2021, Bulk 1970–2018)
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55 entries
New York University Libraries — Tamiment Library & Wagner Labor Archives — NY (1861–2021, Bulk 1970–2018)
Boston College — John J. Burns Library — MA (1860–1992)
New York Public Library — NY (1857–1965)
California Historical Society — North Baker Research Library — CA (1850–2001)
Detroit (MI) Public Library & Special Collections — MI (1850–1935)