Smog story (California Institute of Technology), 1950

3 images. Smog story (California Institute of Technology), 17 November 1950. Doctor A.J. Haagen-Smit (produces smog in laboratory). (Sleeve reads: 9593 was 8853).; Caption slip reads: "Photographer: Hecht. Date: 11-17. Reporter: Harrison. Assignment: Smog story -- Caltech. 17: Doctor A.J. Haagen-Smit holds inflated toy balloon in stream of ozone-hydrocarbon fumes. Oxidation of rubber caused it to burst in a few seconds. 142-143: In his laboratory, Doctor A.J. Haagen-Smit produces one of the commonest kinds of smog product of ozone and hydrocarbons"