Rawhide - Season 7 Episode 28
Overview: The spring that feeds a creek, has been dammed by Dr. John Merritt and his friend Phinn Harper and their men. They are looking for the remains of a 200 year old Spanish expedition, and their treasure chest. Merritt has three to four months to live and has nothing to leave his wife and kids. He quit practicing medicine, but is teaching Phinn. The cattle need the water.