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Collection place
- North America628
- The Americas628
- United States628
- California621
- Northern California560
- Northeastern California389
- Lassen County, California367
- North Central California171
- Madeline Plains, Lassen County, California116
- Lake County, California107
- CA-Lak-30, Lake County, California101
- Eagle Lake, Lassen County, California67
- CA-Las-9 (Madeline Dunes site), Madeline Plains, Lassen County61
- Sacramento County, California57
- Honey Lake Valley, Lassen County, California54
- San Francisco Bay Area, California38
- CA-Las-1, Lassen County, California36
- Bodega Bay region, Sonoma County, California35
- Sonoma County, California35
- Sonoma coast, Sonoma County, California35