6 images. "Smog", Stanford Research Institute -- Pasadena, 20 April 1950. Doctor Fred E. Littman; Doctor Henry G. Wohlers; Chester W. Marynoski; Richard Perry; Doctor Robert W. Benoliel. (Sleeve reads: 8628 now 9593).; Caption slip reads: "Photographer: Lapp. Date: 04-10. Reporter: Harrison. Assignment: Smog -- Stanford Research Institute, Pasadena. 9-10: General view of Laboratory. From left foreground are Dr. Fred E. Littman; Dr. Henry C. Wohlers; and Chester W. Marynoski (right). In right background, if he shows is Richard Perry. 5-6: Dr. Robert W. Benoliel, director of laboratory, with sulfur dioxide analyzer. 13-14: Chester W. Marynoski, chemical engineer, with apparatus for collecting contaminants".