13 photographs of set ups for mixing gelatine like composition in wells at Santa Fe Springs, also a zublin oil well drilling bit, Southern California, 1929. "Subject: Set ups for mixing gelatine like composition in wells at Santa Fe Springs, also zublin bit; Agency: McCarty Co., #11804; Client: Calif[ornia] Gale Co., Mr. Dunsmore; Original print order: 1 ea[ch], 1 E[a]ch; Size: 8x10, contact; Finish: gl[ossy]; Re-order: 1 ea[ch], 4 ea[ch] #5, 10, 9, 11, 13; Size: 8x10, 5x7; Finish: gl[ossy]; Year: 1929; Job: 10-4-27" -- on envelope front. "Extra charges: Mr. Dunsmore; Hours: 6 1/2, Time at 1.50, Regular, 9.75; Original photographs-Size: 13 at 1.00, Out of City, 13.00; Operator's report (Name): Joe" -- on envelope back.