| Unidentified photographer Lower Pacific Mills, spinning room [Lower Pacific Mills, Lawrence, Massachusetts] 1900 (ca) Cyanotype 12 x 19 cm (sheet) Lawrence History Center Lawrence History Center Photograph Collection, LM1 - Swartz collection box 2 outgoing (shelf locator), Accession #: 1996_124_210, Identifier: NG 349/10 LL/93877
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