Beckman's address as incoming president of the Los Angeles Chamber of Commerce references major challenges, including air pollution. A list of incoming officers and directors is included, along with minor annotations in pen.
Beckman, Arnold O. “Arnold O. Beckman's Remarks at the Los Angeles Chamber of Commerce Annual Banquet,” January 25, 1956. Beckman Historical Collection, Box 1, Folder 31. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/3r074v861.