| The Colusi County Historical Society is a growing non-profit organization. The following types of membership are available as stated below: |
| Individual annual......................... | .......................$15.00 per year |
| Family annual........................ | .......................$20.00 per year |
| Benefactor annual.................. | .......................$40.00 per year |
| Patron annual......................... | .....................$100.00 per year |
