Dr. Clark B. Millikan on ladder looking into Caltech wind tunnel while another man observes from below. Reported in "CALTECH TESTS WIND IN TUNNEL: Guggenheim Graduate Unit Trying Out Planes" Los Angeles Times, 21 Jul. 1929: A1.
Richard C. Tolman and Albert Einstein standing in front of a blackboard at the California Institute of Technology. Reported in "TOLMAN TALKS TO SCIENTISTS: Expanding Universe Theory Subject of Lecture Dr. Einstein Takes Part in Discussion World to Go on Forever, Speaker Declares," Los Angeles Times, 09 Jan. 1932: A2.
Three officials from California Institute of Technology posing with a steam shovel at 1930 groundbreaking ceremonies for dormitories. Reported in "NEWS OF SOUTHERN COUNTIES: GROUND BROKEN FOR CALTECH Million-Dollar Dormitories Begun With Steam Shovel Student Body President at Throttle of Machine More Than 1000 Persons See Unique Ceremonies," Los Angeles Times, 03 Jun. 1930: A8.
Dr. Clark B. Millikan on ladder looking into Caltech wind tunnel while another man observes from below. Reported in "CALTECH TESTS WIND IN TUNNEL: Guggenheim Graduate Unit Trying Out Planes" Los Angeles Times, 21 Jul. 1929: A1.
Royal W. Sorensen and three male students standing on three sides of switch mechanism on podium- or table-like structure, wtih other equipment in background
This photograph may be associated with the article, “ATOM FACES NEW ATTACK: More Powerful ‘Gun’ Build Caltech Scientists Improve on Device Producing 16,000,000-Volt Rays,” Los Angeles Times, 5 Aug. 1935: A3.
Oscillograph mounted on wheeled cart, with dials and switches at center and conical device at top, with curved tube leading to hole in panel at left, in room with other equpiment in background