Collector
- P. C. Geyer8 objects
- P. C. Peterson4 objects
- P. E. Harroun8 objects
- P. F. Bowman3 objects
- P. G. Black25 objects
- P. H. Johnston103 objects
- P. Nianico2 objects
- P. R. Beck1 objects
- P. W. Nahl2 objects
- P. W. Shafer3 objects
- Pablo Soldi2 objects
- Pacific Gas and Electric Company6 objects
- Paleontology (UC Berkeley)70 objects
- Paleontology Department [UC Berkeley]''Paleontology Department (UC Berkeley)1 objects
- Palo1 objects
- Pamela Israel112 objects
- Pamela Johnson1 objects
- Parents of Mrs. Arnold John Liechti3 objects
- Pathaca1 objects
- Patricia Berger70 objects