OVER 75 MAJOR PUBLICATIONS COVERING THE FOLLOWING SUBJECTS AMONG OTHERS
- Quaternary Geology of the Puget Sound Region, WA
- Channeled Scablands, Washington
- Physiographic Studies in Greenland
- Geology of the Chicago region (Draining of Glacial Lake Chicago)
- Origin of limestone caverns in 17 states, Mexico and Bermuda
- Caves of Missouri
- Geomorphic history of the Ozarks