He spent several months working for the Wisconsin Anti-Tuberculosis Association before moving on to the University of Wisconsin-Madison in 1923.

Whitman bought the rights to Coins of the World Catalogues from the estate of Wayte Raymond.

Yeoman served on the American Numismatic Association Board of Governors from 1946–1951, and in 1964 was a member of the United States Assay Commission.

Yeoman received the Farran Zerbe Memorial Award, the highest honor bestowed by the American Numismatic Association, in 1956.

In 1997 he was featured on a pair of silver and "gold-plated" medals, issued in a limited edition of 50 sets.