Pennsylvanian ostracodes of Illinois.

"References": p. 124-126.

Municipal water supplies of Illinois,

Illinois. University. Bulletin, v. 5, no. 7.

Story of Illinois series.

Mode of access: Internet.

Geological Survey of Illinois,

Vol. 8 edited by Josua Lindahl, state geologist.

Report of Illinois Good Roads Commission to the forty-fourth General Assembly.

Mode of access: Internet.

University of Illinois; survey report

Mode of access: Internet.

Study of sulfur behavior and removal during thermal desulfurization of Illinois coals /

Includes bibliographical references (p. 25).

A distributional check list of the birds of Illinois,

"A joint project of the Illinois Audubon society and the Illinois state museum."

Guide to rocks and minerals of Illinois.

Mode of access: Internet.

Biennial report of the Auditor of Public Accounts, to the Governor of Illinois.

Mode of access: Internet.

Annual report of the Auditor of Public Accounts to the Governor of Illinois.

Report year ends Nov. 30.

Forest trees of Illinois. How to know them. A pocket manual describing their most important characteristics ...

At head of title: State of Illinois. Department of Conservation, Springfield.

A bibliography of Illinois archaeology /

Mode of access: Internet.

A chronology of Illinois history, 1673-1941 /

Reprint. Originally published: Illinois blue book, 1941-1942.

1981 Illinois White House Conference on Aging report : May 27- 28, 1981, Krannert Center for the Performing Arts, University of Illinois Champaign-Urbana /

A State Conference created as a prelude to the White House Conference on Aging 1981.