Rec | Mtg# | Year | Authors | Institution | Talk title |
---|---|---|---|---|---|
1 | 482 | 1931 | Gerald Francis Loughlin; Albert Herbert Koschmann |
USGS | Physiography of the Magdalena District, New Mexico |
2 | 517 | 1934 | Albert Herbert Koschmann | USGS | The geology of the new deep tunnel of the Cripple Creek District |
3 | 537 | 1936 | Albert Herbert Koschmann | USGS | Structure of the Magdalena Mining District, New Mexico |
4 | 559 | 1938 | Albert Herbert Koschmann | USGS | Cripple Creek Crater, Colorado |