History
- Lake County Public Library Colorado Mountain History Collection
- Society of Mining Law Antiquarians
- Mining Foundation of the Southwest
- Mining History Association
- Bancroft Oral Histories
- National Mining Hall of Fame and Museum
- Colorado Mining Association
- National Mining Association
- American Heritage Center, University of Wyoming
- Arthur Lakes Library, Colorado School of Mines
- American Alpine Club
- Tonopah Historic Mining Park
- Visionary Gold Corp.