Snake Skin Identification Challenge

A friend of KU Herpetology in the Endowment office would like to know if we have any thoughts on the identify of the snake whose shed skin was found by some kids heading into a hole near her garage. The sender notes that while the images are reasonably well-lit and in-focus compared to the photos we usually receive that the basket weave chair may have been included to challenge us. Best guess wins a point in the KU Center for Herpetological Accuracy's Annual herp identification contest.