| List Name | Description | Location | Surname | Category |
|---|
| AZYUMACO | Yuma County, AZ | USA, Arizona, Yuma | | |
| YUMA | A mailing list for the discussion and sharing... more | | YUMA | |
| COYUMA | Yuma County, CO | USA, Colorado, Yuma | | |
| COMORGAN | Morgan County, Colorado. Interested individuals... more | USA, Colorado, Morgan | | |
| COPHILLI | Phillips County, Colorado. Interested individuals... more | USA, Colorado, Phillips | | |
| COSEDGWI | Sedgwick County, Colorado. Interested individuals... more | USA, Colorado, Sedgwick | | |
| COWASHIN | A mailing list for anyone with a genealogical... more | USA, Colorado, Washington | | |