Neal Smith National Wildlife Refuge. Largest re-creation of the tallgrass prairie ecosystem in the U.S. Also environmental education.

Illinois nonprofit agency committed to protecting tallgrass prairie.

Dedicated to the inventory, promotion, restoration, and protection of natural prairies in the Upper Midwest. Includes conference information, discussion area, news articles, and information about prairie flora and fauna.

Land trust specializing in prairie and wetland protection and restoration in Nebraska, USA.

Sponsors tours and activities as an educational service, land acquisition, volunteer land management to protect prairie.