Creator
- Oregon. Dept. Of Geology And Mineral Industries5
- Linn County (Or.)4
- Oregon State College. Extension Service4
- American Mining Congress1
- Bachelet, Dominique1
- Bates, Christopher Allen1
- Benson, Gilbert Thomas, 1929 1
- Carnegie, John A.1
- Conrad, C. Eugene1
- Corder, Stanley E.1
- Dalton, Meghan1
- Dean, Milton Lee1
- Fleishman, Erica1
- Gedney, Donald R.1
- Gray, Jerry J.1
- Gregory, Irene1
- Haskin, Leslie L. (Leslie Loren), 1882 19491
- Hatfield, Ashley K.1
- Johnston, L. D. (la Rea Dennis)1
- Lange, Erwin F.1