- Regan, Ken12
- Regan, Ken, photographer12
- Arcata Union10
- Beaman, E. O10
- Blackmore Museum (Salisbury, England)10
- Mellen, George Egbert10
- Freeman, Emma B., 1880-19289
- International Film Service9
- Migdoll, Herbert9
- Migdoll, Herbert, photographer9
- Boston and California Company8
- Swanlund Studio7
- Patterson, Frank6
- Thompson, Paul6
- Flaglor, Amasa Plummer, 1848-19185
- Houseworth, Thomas, 1829-19155
- Johnson, L.H5
- Trager, George E5
- Eastern Illustrating & Publishing Company4
- Haynes, F. Jay (Frank Jay), 1853-19214