Graphite from selected localities.
USA | |
| 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 |
Houghton's Graphite Mine, Walpole, Cheshire County, New Hampshire, USA