From The Blue Book of Gun Values
- Serialization/ Date of Manufacture
- Store Brand Crossover List
- Proof Marks
- Glossary
- Gun Collector Organizations
Articles by Jim Supica
- A Brief History of Firearms
- What's my gun worth?
- Evaluating Firearms Condition
- Hard to identify or value firearms
- Pieces of History: A system for evaluating historically attributed firearms
- How to be a Gun Collector
- FAKE!
- Collectors Federal Firearms License
- How to ship guns and ammo
- Gun Auction Buying Tips