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USA | |
| Jackson, Charles T. (1844): Final Report on The Geology and Mineralogy of New Hampshire. |
| A Catalogue of American Minerals, with their localities By Samuel Robinson |
| |
| Moore, 1949. Geology of the Keene-Brattleboro Quadrangle |
| Rob Lavinsky |
| Morrill, 1960. NH Mines and Mineral Localities. |
| Read, Benjamin (1892). The History of Swanzey, New Hampshire, from 1734 to 1890 (Salem, MA: Salem Press), p.4. |
| Morrill, 1960. NH Mines and Mineral Localities. |
| Anna Wilken collection |
| Jackson, Charles T. (1844): Final Report on The Geology and Mineralogy of New Hampshire. |
| Kruger, Frederick C. (1946) Geology of the Bellows Falls Quadrangle, NH and VT |
Old Beneis Farm, Marlborough, Cheshire County, New Hampshire, USA