| Rec | Mtg# | Year | Authors | Institution | Talk title |
|---|---|---|---|---|---|
| 1 | 572 | 1939 | Edgar Lee Stephenson | USGS | The results of magnetometer surveys on laccoliths in the Highwood Mountains, Montana |
| 2 | 584 | 1940 | Edgar Lee Stephenson | USGS | Geophysical and geological investigations of the Casper Mountain chromite deposit, Wyoming |