Presentation slides--Medical economics--Chart: Average annual income per person in 1930 compared with the population per physician in active practice in 1931, circa 1931

Presentation slides--Medical economics--Chart: Average annual income per person in 1930 compared with the population per physician in active practice in 1931, circa 1931, Box: 82. Historical Image Collection, OHSU-HIC. Oregon Health & Science University, Historical Collections & Archives. https://ohsu.libraryhost.com/repositories/2/archival_objects/78231 Accessed February 26, 2026.