The electronic document depository for state documents, maintained by the Illinois State Library.

The Prairie Research Institute IDEALS Community includes publications of the Illinois Natural History Survey (INHS), the Illinois State Geological Survey (ISGS), the Illinois State Water Survey (ISWS), the Illinois Sustainable Technology Center (ISTC), and the Illinois State Archaeological Survey (ISAS).

Library services and contact information, and a link to the catalog of the Illinois EPA Library.

The Department of Defense's website for defense related technical reports.

The U.S. Environmental Protection Agency's document search portal. Many documents are available full text.

A digital library of scientific literature and research produced by the National Oceanic and Atmospheric Administration.

Catalog of publications by USGS scientists.

Find current and historic publications of the U.S. Government. Coverage includes technical reports, records of hearings, and legislation. Includes links to full text where available.

A federated search of multiple U.S. Federal government databases. Coverage includes government documents, legislation, and articles from agency research. Some full text.

A guide providing background information on Environmental Impact Statements, and tools and tips for locating statements and related documents.