Concrete mixer in Los Angeles River bed & Graham Brothers truck, Southern California, 1940

3 photographs of construction vehicles, Southern California, 1940. "Date: Tues[day]; Time: Now; Operator: Brown; Meet: Kingston; For: Royal Ind[emnity] Co[mpany]; Job: 7th St[reet] L[os] A[ngeles] River Bed" -- on card front. "Mileage: 32858-78" -- on card back. "Subject: Concrete Mixer in L[os] A[ngeles] River Bed & Graham Bro[ther]s Truck; Client: Royal Indemnity Co[mpany], Mr. Kingston, 210 W[est] 7th St[reet]; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Year: 1940; Job: 07-16-75" -- on envelope front. "Operator's Report-Name: Brown; 5 Original Photographs-Size: 8x10, exteriors; Amount: 8.50" -- on envelope back.