Partial List of Collectors
- Pacific Bell
- Hewlett-Packard
- Chevron
- United States Geological Survey
- the Yosemite Museum
- A. G. Edwards
- Brooks Fiber Optics
- Advanced Micro Devices
- Larry Ellison
- Northern Telecom
- Kaiser Permanente
- Charles Schwab (in over 200 offices)
- AT&T
- Pacific Gas & Electric
- UCSF Medical Center
- VISX
- Oracle
- WEBEX
- Steve Jobs
- Cox California PCS
- Fujitsu
- Silicon Graphics
- Healthlink
- Andrew McCarthy
- ResMed
- MasterCard
- Yosemite Fund
- National Park Service