- Millikan, Robert Andrews, 1868-19537
- Arrivals & departures--American--California--Los Angeles2
- California Institute of Technology2
- Physicists--American--California2
- Astronomical observatories--California--Los Angeles1
- Balch, Allan Christopher, 1864-19431
- Ballard, Russell H. (Russell Henry), 1875-19321
- Beard, Charles A. (Charles Austin), 1874-19481
- Brougher, James Whitcomb,$c (Sr.), 1870-19671
- Building dedications--California--Los Angeles1
- Eating & drinking--California--Los Angeles1
- Einstein, Albert, 1879-19551
- Gregg, Willis Ray, 1880-19381
- Griffith Observatory1
- Hughes, Rupert, 1872-19561
- Landmarks1
- Meetings--California--Los Angeles1
- Meteorology--California--Pasadena1
- Microphones1
- Military officers--American--California--Pasadena1