| Rec | Mtg# | Year | Authors | Institution | Talk title |
|---|---|---|---|---|---|
| 1 | 296 | 1915 | Robert Browning Sosman | Geophysical Laboratory | Types of columnar structure in igneous rocks |
| 2 | 307 | 1916 | Robert Browning Sosman; John Clyde Hostetter |
Geophysical Laboratory | Zonal growth in hematite and its bearing on the origin of certain iron ores |
| 3 | 333 | 1919 | Robert Browning Sosman | Geophysical Laboratory | Note on volcanic explosions |