The Northern Mariposa County History Center (NMCHC) is a 501c3 nonprofit organization. We welcome and appreciate your donations to keep the NMCHC open to all. The NMCHC is an important part of the Mariposa County’ “Gold Rush” history. Without your help, we would not be able to remain open and continue educating the thousands of visitors that come from around the world to see our historic museum. Please take a moment to donate and guarantee our continued efforts to educate visitors on the important role this area of the county played in the legendary “Gold Rush” era.