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.