Served under Richard Watson Gilder as an inspector and tabulator on New York Tenement House Committee, 1894. Appointed lecturer, Ecole Russe des Hautes Etudes Sociales, Paris, 1902. Instructor economics, University of California, 1903-1908.
Associate in commerce, University of Illinois, 1908-1910, assistant professor economics, 1910-1919, professor, 1919-1942. Emeritus since 1942, acting head of department, 1936.
Served under Richard Watson Gilder as an inspector and tabulator on New York Tenement House Committee, 1894. Member American Economics Association, Citizens Conference on International Economics Union Academy Political Science, Foreign Policy Association, American Political Science Association, American Jewish History Society, Royal Economics Society Great Britain, American Association University professors, Phi Kappa Phi, Phi Beta Kappa, Pi Gamma Mu, Beta Gamma Sigma, Pan-Xenia (international president 1938-1940), Artus, Phi Kappa Epsilon. Clubs: University, Rotary, Export Managers’ of Chicago (honorary).