Yosemite National Park Volunteer Program
- https://www.nps.gov/yose/getinvolved/volunteer.htm
- 209-379-1850
- yose_volunteers@nps.gov
- Adult, High School, Minor w/Guardian
Grandma’s House
- Grams4kids.org
- (209) 352-7056
- grandmashousecolumbia@gmail.com
- Adult, High School
