Geological survey of Illinois

- publisher: [Springfield, State journal steam press, etc.]
- creator: Illinois. State Geologist Worthen, Amos Henry, 1813-1888
- contributor: Worthen, Amos Henry, 1813-1888.
- Keyword: Geology Illinois. Paleontology Illinois.
- years: 1866-90.
- pages: 8 v. in 9.
- language: eng
- lccn: m
- class: QE105
- notes: Vol. 8 edited by Josua Lindahl, state geologist.
- download: pdf file