My cousin (not pictured) worked on those sessions back then. Burbank, historic studio where Mary Pickford, Chaplin, Fatty Arbuckle (before his trial), and Harold Lloyd hadworked, among others. For the job and the promise to keep his mouth shut my cousin got enough moolah to retire to the Bahamas and be an early investor into Xerox. The rest is histery.
Note you can plainly see the studio setting.