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Subject
- Topical Subject: IGS Annual Reports6
- Geographic Subject: Indiana5
- Topical Subject: Geology, Stratigraphic--Ordovician4
- Geographic Subject: Dearborn County (Ind.)3
- Topical Subject: Geology3
- Topical Subject: Stratigraphic correlation3
- Geographic Subject: Tanners Creek (Ind. : Creek)2
- Topical Subject: Geology, Stratigraphic--Silurian2
- Geographic Subject: Jefferson County (Ind.)1
- Geographic Subject: Madison (Ind.)1
- Geographic Subject: Ohio County (Ind.)1
- Geographic Subject: Richmond (Ind.)1
- Geographic Subject: Ripley County (Ind.)1
- Geographic Subject: Switzerland County (Ind.)1
- Geographic Subject: Wayne County (Ind.)1
- Topical Subject: Bilateria, Fossil1
- Topical Subject: Cleveland, Cinicinnati, Chicago, and St. Louis Railway Company1
- Topical Subject: Geology, Stratigraphic1
- Topical Subject: Paleontology1
- Topical Subject: Paleontology, Startigraphic--Ordovician1