The first U. S. work dedicated to the medical aspects of military pilot selection. According to the National Museum of Health and Medicine, this manual was written by William Holland Wilmer, then director of the Medical Research Laboratory at Mineola, Long Island (1917). This placed Wilmer at the forefront of training for flight surgeons and in the classification of pilot candidates as they used novel devices and instruments to simulate high-altitude conditions. He pioneered efforts to produce oxygen delivery systems to pilots.  CHAPTER I: Aviation and its medical problems. CHAPTER 2: The selection of the flier. CHAPTER 3: The classification of the flier. CHAPTER 4: The maintenance of the efficiency of the flier. Digital facsimile from the Internet Archive at this link.

Digital facsimile from Google Books at this link.

"This publication contains an account written by Col.William H. Wilmer, Medical Corps, who was in charge of the Air Service Medical Research Laboratories in Issoudon, France, from September, 1918, until the armistice. The account describes the various phases of the physiological and psychological problems of aviation, the organization of the work in the A[merican[ E[xpeditionary] F[orce], and the application of the newly discovered principles to the maintenance of the efficiency of the flier. It also suggests the future possibilities that lie in aviation medicine. In addition, it records the tasks accomplished by the various departments of the medical research laboratories, the character of the work with the British, conferences with various types of fliers, and it analyzes accidents and their causes" (Foreward).
Digital facsimile from Google Books at this link.