Kim McFadden, one of my former Dendrology students, standing by an American chestnut warped by the blight; Sumner County, northern Middle Tennessee.  Dr. Kim McFadden is now a Math Professor at Volunteer State Community College. Note the holes, probably from woodpeckers; they are perfect portals for the entry of fungal spores.
Photo taken by author in 1981 

Resurrecting the American chestnut