During parts of the seasons of 1937 and 1938, parties from the Montana Archaeological Survey excavated at a campsite exposed by one of the many cave-ins in abandoned tunnels of the Red Lodge Coal Mines, near Red Lodge, Montana. The first season's work was under the direction of the late H. Melville Sayre, then Director of the Survey, while Raymond Thompson was leader of the 1938 party. Laboratory analysis and interpretation were completed by the writer, who is indebted to Paul Reiter, of the University of New Mexico for critical comment.