Donor
- M. B. Ichaporia41 objects
- M. Boissé980 objects
- M. C. MacKenzie11 objects
- M. Donald Hambly1 objects
- M. E. Beall23 objects
- M. E. Cheney1 objects
- M. E. Cummings6 objects
- M. E. Mize2 objects
- M. H. Lenormand1 objects
- M. H. de Young Memorial Museum2 objects
- M. K. Opler4 objects
- M. Olwen Davies5 objects
- M. Torrey1 objects
- M. V. Campbell4 objects
- Mabel Ballew19 objects
- Mabel McKay8 objects
- Machinery Credit Corporation81 objects
- Macy's Department Store, San Francisco11 objects
- Macys16 objects
- Madeline A. Pardee73 objects