(1962-1996): Econometrics, Midwest Economy

(1968-1979): Econometrics, Agricultural Economics

(1964-1966): International Trade, Development Economics

(1964-1971): Urban and Regional Economics

(1966-1993): Labor Economics

(1959-1986): Econometrics, Agricultural Economics

(1966-1977): Labor and Industrial Relations

(1962-1967): Econometrics, Environmental Economics

(1966-1967): Value, Capital, and Distributions; Growth and Development

(1967-1991): Low Volatility Theory of Stocks

(1963-1983): Resource Economics, Population

(1965-1989): International Economics

(1920-1940): Marketing

(1900-1933): Economic History, Money Market, Public Finance, Banking

(1934-1972): Economic History, Money & Banking, Public Finance

(1917-1925): Labor, Industrial Relations

(1925-1933): Economic History, International Trade

(1912-1942): Economic Theory

(1902-1933): Corporate Finance and Investments.

(1922-1965): Transportation