J Clin Invest 7(2), 229–247 (1929), DOI 10.1172/JCI100226. Pages 230–231 and Figures 1–2 describe the sheet-metal tank, neck collar, head outside at atmospheric pressure and pressure-driven chest movement. The original apparatus report distinguishes pressure applied around the body from pressure applied at the airway.
Verified locator: J Clin Invest 8(1), 33–46, 1 December 1929, DOI 10.1172/JCI100253. Primary byline Louis A. Shaw and Philip Drinker. Printed p. 33 distinguishes laboratory tests on curarized cats from clinical use not yet available; pp. 33–35 describe chamber, collar, window and pumping. Full scanned publisher PDF inspected.