Dr. Wiley, third from left, chief chemist at the USDA, observes five male volunteers at a table with food and drinks. A sixth man, perhaps an assistant and apparently not a volunteer, stands to the left of Wiley.
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)
Exhibition:
Exhibited: "Images from the History of the Public Health Service," organized by Ronald J. Kostraba, Parklawn Conference Center, 1989.