Published in August 2020. This 97 page book covers the geology and mining history of the IL/WI/IA tri-state area known as the Upper Mississippi Valley Lead and Zinc District. It has over 200 images with 100 mineral pictures and over 100 historic images. It is a softcover book and measures 11" by 8 1/2". Authored by Steve Bussan, a resident of the district almost his entire life. Note: I am the author and if you want a signed copy, please let me know.. Free shipping in the US.