Walker, B. & Pilsbry, H. A. (1902). The Mollusca of the Mt. Mitchell Region, North Carolina. Proceedings of the Academy of Natural Sciences of Philadelphia. 54 (2): 413-442, plates 24-25.
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Walker, B. & Pilsbry, H. A.
1902
The Mollusca of the Mt. Mitchell Region, North Carolina.
Proceedings of the Academy of Natural Sciences of Philadelphia