From Mises Wiki
Fritz Machlup (1902â€“1983) was an Austrian economist. Mark Thornton describes his life,
"Fritz Machlup â€¦ was born in Wiener Neustadt, Austria, the son of Berthold Machlup owner of a cardboard-manufacturing business. He entered the University of Vienna in 1920 where he studied under Friedrich von Wieser and Ludwig von Mises (and became his professional advocate in later years). His dissertation on the gold-exchange standard was completed under von Mises in 1923 and published in 1925 as Die Goldkernwahrung. He married Marianne (Mitzi) Herzog in 1925 and they had a son and daughter. Machlup became a partner in an Austrian cardboard-manufacturing firm in 1922 and helped form a paperboard corporation in Hungary in 1923. In 1927 he became a member of the Austrian cardboard cartel. Machlup also served as the treasurer and later secretary of the Austrian Economic Society and participated in the famous seminar of von Mises and the interdisciplinary seminar, the Geistkreis."
- Thornton, Mark. "Biography of Fritz Machlup." Mises.org