- Optical devices6
- Railroad freight cars--California--San Bernardino3
- Railroad tracks--California--San Bernardino3
- Podlech, Rollin Augustus, 1881-19502
- Railroad employees2
- Adams, Ruth Ione Hooven, 1917-19841
- Astronomers--American--California--San Bernardino1
- Brant, Louise A., b. 19181
- Cameras1
- Detectives1
- Exhibitions--California--Los Angeles1
- Graduate students--California--Los Angeles1
- Hudson, Nathaniel Joy, 1870-19521
- Laboratories--California--Los Angeles1
- Pease, F. G. (Francis Gladheim), 1881-1
- Phillips, Fred F., 1881-19731
- Railroads--Freight-cars1
- Scientific equipment--California--Los Angeles1
- Sugar, H. A.1