- California5,265 objects
- North America5,265 objects
- Northeastern California5,265 objects
- Northern California5,265 objects
- Northern Sierras, Northern California✖Remove constraint Collection place: Northern Sierras, Northern California5,265 objects
- The Americas5,265 objects
- United States5,265 objects
- Placer County, California1,645 objects
- Nevada County, California1,593 objects
- San Juan Ridge, Nevada County, California1,348 objects
- Martis Valley, Placer County, California1,179 objects
- CA-Nev-15, Nevada County, California843 objects
- Calaveras County, California842 objects
- Tuolumne County, California399 objects
- CA-Cal-142, Calaveras County, California390 objects
- CA-Pla-5 or 6, Placer County, California307 objects
- Amador County, California216 objects
- Plumas County, California176 objects
- CA-Ama-3 (Bamert Cave), Amador County, California172 objects
- CA-Nev-46, Nevada County, California170 objects