Creator
- Gruttner, Ingbert2
- Haagen-Smit, Jan Willem2
- Hawes, R. C.2
- Hay Photo Service2
- Hussey, Joseph L.2
- Institute of Biology2
- James R. Smith & Son2
- Lauffer, H. F.2
- Los Angeles Chamber of Commerce2
- Loughridge, Donald H.2
- Maddocks, Joe2
- Musser-Nichols Photography2
- Otto, Glenn2
- Patterson, E. B.2
- Robinson, Merton2
- Rushton, J. H.2
- Stickney, M. E.2
- Valdez, D.2
- ADN Zentralbild1
- Aerial Eye, Inc.1