Mineralogy
12 public-domain mining documents in the Mineralogy collection of the Mountain Man Mining Library.
- A Book of Precious Stones: Identification of Gems and Gem Minerals
- Dana's System of Mineralogy (6th Edition)
- Gem Stones of the United States (Bulletin 1042-G)
- Gems and Precious Stones of North America
- History of the Gems Found in North Carolina
- Mineral Collecting Sites in North Carolina (NCGS IC 24)
- Precious Stones and Gems: Their History and Distinguishing Characteristics
- The Curious Lore of Precious Stones
- The Curious Lore of Precious Stones (Project Gutenberg)