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| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey Carlson, Ernest H. (1991) Minerals of Ohio. Bulletin 69 (1st ed.) Ohio Division of Geological Survey Hansen (1985) Additional notes on Ohio diamonds. Ohio Geology Newsletter, Winter 1985: 1. Hansen (1982) Diamonds from Ohio. Ohio Geology Newsletter, Fall 1982: 1. Gunn, C.B. (1968) A descriptive catalog of the drift diamonds of the Great Lakes region, North America. Gems and Gemology: 12(11): 302. Blatchley, Willis S., Hill, John R. (1903) Gold and Diamonds in Indiana. Report of State Geologist. Indiana Geological Survey p.11-47. |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |
| Carlson, Ernest H. (2015) Minerals of Ohio. Bulletin 69 (2nd ed.) Ohio Division of Geological Survey |