Rec | Mtg# | Year | Authors | Institution | Talk title |
---|---|---|---|---|---|
1 | 248 | 1911 | Joseph Bertram Umpleby | USGS | And old erosion surface in eastern Utah, its age and value in time determinations |
2 | 275 | 1913 | Joseph Bertram Umpleby | USGS | The contact-metamorphic copper deposit at Mackay, Idaho |