Studebaker Free Wheeling lubrication, Union Oil Co., Southern California, 1931

3 photographs of men and cars being serviced, Union Oil Co., Southern California, 1931. "Subject: Studebaker Free Wheeling lubrication; Client: Union Oil Co.; Original Print Order: 1 ea[ch]; Size: 8x10, 5x7; Finish: gl[ossy]; Re-Order: 1 ea[ch]; Year: 1931; Job: 6-17-99" -- on envelope front. "Operator's Report (Name): Joe; 3 Original Photographs-Size: 8x10; Amount: 3.00, 2.00, 1.00; 2 Exposures with Lights; 1/2 Hours: Time: @2.00; Extra Charges: Badger" -- on envelope back.