Donor
- Loring J. Barker18 objects
- Richard K. Beardsley18 objects
- Older University Collections15 objects
- City and County of San Francisco, Waste Water Management Program14 objects
- Jeremiah B. Lillard11 objects
- Nancy H. Moore11 objects
- Russell Wallace Newman11 objects
- Sacramento County Board of Education11 objects
- Thomas Roy Hester10 objects
- University of California Field Party 197310 objects
- Phoebe Apperson Hearst8 objects
- William J. Wallace7 objects
- Clement W. Meighan6 objects
- Edward Elias6 objects
- Walter D. Weymouth6 objects
- Albert Mohr5 objects
- Beverly Blackmer5 objects
- California State Historical Society5 objects
- Francesca Blackmer Wigg5 objects
- William S. King5 objects