1961 excavation at Lamb Spring (IMAGE) Frontiers Caption 1961 excavation at Lamb Spring, showing Ed Lewis (standing on left) and Waldo Wedel, along with two fieldmen. Glenn Scott can be seen in the excavation pit alongside some mammoth bones wrapped in plaster jackets for preservation. Credit Image: USGS public domain image. Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.