Resource Description

The Illinois Geological Survey, conducted from 1851 to 1875, was the first geological survey of Ilinois. This survey resulted in an eight volume set of books, published between 1866 and 1890, containing more than 4,700 pages of text, figures, and plates regarding Illinois landforms, geology of coal fields, analyses of Illinois rocks and waters, and summaries of geology county by county. All eight volumes are reproduced digitally on this site.