The Case of the Most Ancient Bone is the 50th book in the Hank the Cowdog series by John R. Erickson. This is a long and interesting session. When Hank was invited to archeological excavations, he did everything to impress the beautiful and luxurious lady. Hank’s heart was stolen when looking at this lady. Can Hank be awake to save an ancient buffalo when thieves of precious artifacts are about to swallow?