In 1956, James Lee Hansen began making molds and recording many of the petroglyphic prehistoric carvings in the are of the Columbia River Gorge that was inundated by the Dalles and John Day Dams constructed by the Army Corp of Engineers in the 1950’s. Many of these recorded images were gifted to “The Oregon Museum of Science and History” in Portland, Oregon. This project was completed with Dr. Carl Heller and James Haseltine.
