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| Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261 Robinson, S. 1825: A Catalogue of American Minerals, with Their Localities |
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| Cochrane, Warren and Wood, George K. (1895): History of Francstown, N.H. |
| Hayward, William Willis (1889). The history of Hancock, New Hampshire, 1764-1889 (Lowell, MA: Vox Populi Press). |
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| P Cristofono collection |
Route 101A construction site, Merrimack, Hillsborough County, New Hampshire, USA