Photograph of woman in automobile and man at service station, Southern California, 1931. "Stop Your Motor, Union Gasoline, No Smoking, In Case of Fire While Filling Cars, Stop the pump, don't pull the hose from the tank, use pryene, use foamite or soda and acid extinguisheres if fire persists, use sand, dirt, or water if these fail, under hood through hood ventilators or though radiator openings"-- on signs. "Gallons, Union Ethyl Gasoline, Ethyl; Gallons, Pointers must be set to zero [ilg] starting, New Union 76 Gasoline, Union"-- on gasoline pump.