Flexner, Simon, 1863-1946. William Henry Welch and the heroic age of American medicine, [electronic resource] / by Simon Flexner and James Thomas Flexner.. — New York, : The Viking press,, 1941.. — x, 539 p. : front., plates, ports. 24 cm.
"First published in October 1941."
"Source references" included in Appendix C: Notes to the text, p. 466-524.