Correspondence to Dr. A. C. Fieldner from H. A. Doerner discussing magnesium, with attachments1942-01-051941-01-261940-08-211941-02-101940-08-081940-10-301942-01-101940-11-051941-01-181942-02-271941-01-241941-02-08Doerner, H. A. (Henry Alfred), 1889-http://rightsstatements.org/vocab/NoC-US/1.0/enghttp://congressarchives.org/record/wvul_am1500_b6_f03_0005