pl23_wea00239.jpg

Engineering committee examining a 1X5 inch board which was driven through a2X6 plank. Somewhere along the path of the Tri-State Tornado,the longest-lived and longest path of any recorded tornado. It traveled over300 miles from SE Missouri to Indiana and killed over 600. In: Journal of theWestern Society of Engineers, Vol. 30, No. 9. September, 1925.