He is a former partner of Arthur Andersen & Company, the accounting firm.

He served as senior partner of William Hutchinson and Company in 1887.

His father is the senior partner of Frank Draper & Company, an investment advisory firm there.

His father is a founding partner of Downer & Company, an investment banking concern in Boston.

He was made a partner of Arthur Young & Company in 1932.

He also became a partner of the firm Geok Teat and Company in 1863.

He remained a senior partner of William Blair & Company until his death.

His father is a partner of Andersen & Company, the management consultants, in Chicago.

From 1976 to 1986, he was managing partner of Lisher & Company, a Manhattan marketing consulting firm.

His father is a partner of Trippe & Company, a private investment firm in Greenwich.