Stephen S. Gregory Jr.

Stephen Strong Gregory Jr. (May 20, 1888–December 20, 1964) was an American investment advisor and ornithologist. He served in the leadership of a number of naturalist organizations. He assembled a significant collection of 4,000 well-preserved ornithological specimens which was largely donated to the Chicago Academy of Sciences after his passing.

Early life Gregory was born May 20, 1888, Gregory was the younger brother of Tappan Gregory, a lawyer and fellow naturalist. He also had a sister, Charlotte.

Gregory attended the Latin School of Chicago. He graduated with a bachelor of arts from Yale in 1911, and from University of Wisconsin with a master of engineering in 1913.

Investment career Gregory worked as an investment advisor. He founded and served as president of the firm Gregory, De Long and Holt, Inc.