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- Biographical information:
- Great American Business Leaders of the 20th Century. From the Harvard Business School.
- Ref Ref HC29 .I57 - International Directory of Business Biographies
- Ref HD6054.4 .U6 K753 2004 - Encyclopedia of American Women in Business
- Ref HD2358.5 .U6 E53 2006 - Encyclopedia of African American Business
- Ref HB76 .W47 1986 - Who's who in economics : a biographical dictionary of major economists, 1700-1986
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