""The Mississippian Series of Eastern Kentucky"" is a geological book written by Charles Butts and published in 1922. The book is a detailed study of the stratigraphic relations of the sub-carboniferous group in the region of Eastern Kentucky. Butts provides a thorough analysis of the Mississippian Series, which is a geological time period that occurred approximately 358.9 to 323.2 million years ago. The author uses new and detailed field examinations...