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USA | |
| Smith, R. C. II, Hoff, D. T. (1984) Geology and mineralogy of copper-uranium occurrences in the Picture Rocks and Sonestown quadrangles, Lycoming and Sullivan Counties, Pennsylvania. Mineral Resource Report M80. Pennsylvania Geological Survey |
| Smith, R. C. II, Hoff, D. T. (1984) Geology and mineralogy of copper-uranium occurrences in the Picture Rocks and Sonestown quadrangles, Lycoming and Sullivan Counties, Pennsylvania. Mineral Resource Report M80. Pennsylvania Geological Survey |
| Smith and Hoff (1984) |
| Smith, R. C. II (1977) Zinc and lead occurrences in Pennsylvania. Mineral Resource Report M72. Pennsylvania Geological Survey |
| Smith, II, R. C. and D. T. Hoff (1984) |
| Smith and Hioff (1984) |
Copper Hollow, Beaver Lake Adits cluster, Lycoming County, Pennsylvania, USA