Some links to other sites:
- Historic Route 66 - Information on Route 66.
- DesertUSA - Information on the desert, the Amboy crater and Roy's as well.
- BLM: CA, Needles field office - Information on the Amboy crater, including a hiking map.
- Amboy, CA - Wikipedia - Cooperative encyclopedia entry on Amboy.
- Localhikes - Amboy crater hike report.
- California Route 66 preservation foundation's entry on Amboy.
- Center for land use interpretation - Roy's diner featured.
- The road wanderer - Covers Amboy, Roy's and the crater.
- Dave Wyman's pictures - Pictures from Amboy by Dave Wyman.