The Economic Functions of Gold. Ian Shannon Don Humphrey Journal of Political Economy 1963 71(6), 594-595
Alleged "Additional Workers" in the Measurement of Unemployment Don D. Humphrey Journal of Political Economy 1940 48(3), 412-419
Interpreting Unemployment in Terms of Family Units Don D. Humphrey Journal of Political Economy 1939 47(1), 82-99
The Nature and Meaning of Rigid Prices, 1890-1933 Don D. Humphrey Journal of Political Economy 1937 45(5), 651-661