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1923 U Mass Lowell
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c1919 U Mass Lowell
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1924 U Mass Lowell
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1924 National Park Service
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1921 National Park Service
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1915 National Park Service
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c1919 U Mass Lowell
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1916 UMass Lowell
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1911c Kengott: The Record of a City
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1912 National Park Service
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c1901 Lowell Historical Society
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c1894 Descendants of Annie Powell
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1924 UMass Lowell
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c1910 UMass Lowell
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1916 UMass Lowell
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1916 Recreation Deparment city report
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1923 UMass Lowell
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1930 UMass Lowell
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1920 UMass Lowell
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c1891 Kirklees Local Studies Library (UK)
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c1895 Descendants of Annie Powell
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1926 UMass Lowell
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1916 UMass Lowell
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c1903 Lowell Historical Society
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1917 UMass Lowell
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1920 UMass Lowell
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c1915 Cornell University
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1904 National Park Service