Scope and Contents From the Sub-Series: This subseries contains records of William L. Honnold’s membership in various professional, business, political, cultural, and social organizations for the time period 1924-1930. Although Honnold largely retired from active mining when he settled in Southern California, he remained active in the American Institute of Mining and Metallurgical Engineers and the Mining and Metallurgical Society of America until well into the 1940s. Always an enthusiastic businessman, he also belonged to both...