- LP Research Notebook 16 RE: discusses his idea of determining partial pressure of oxygen in the presence of other gases. Devised an apparatus to do so.
- Letter from Dr. S. A. Morell, United States Department of Agriculture to LP RE: Informs LP that Dr. Lindh has submitted Morell for membership to the American Society of Biological Chemists. Requests that LP send a note to Dr. King of the University of Pittsburgh discussing Morell's qualifications for membership. Encloses a copy of publications. Requests a photo of LP's home. [Letter from LP to King November 5, 1940] [Filed under LP Correspondence: Box #255.7, File: (M: Correspondence 1940)]
- Letter from Prof. H.B. Hass, Head, Department of Chemistry, Purdue University, RE: Discusses the non-aromaticity of cyclooctatetrene. Presents his views and requests LP's opinions. [Letter from LP to Hass October 12, 1940] [Filed under LP Correspondence: Box #165.5, file:(H: Correspondence, 1940)]
- Telegram from LP to J. B. Conant, National Defense Research Committee. RE: Has a promising method to determine partial pressure oxygen. Job offered to his best post-doctorate assistant. Asks if he can hold him. [Letter from LP to Conant October 9, 1940] [Filed under LP Science: Scientific War Work - Materials re: the Pauling Oxygen Meter, 1940-1947: Box #13.001 Folder #1.1]