Foss was the president of the Haverstraw Trap Rock Corporation from 1914 to 1916. Foss became a well-known collector of oriental rugs, Persian pottery, Chinese pottery, and other items from the East. He bequeathed his personal collection of more than 100 items to the
Yale University Art Gallery. In 1930, Foss followed his father as chairman of the board of the New York Trap Rock Corporation. In that capacity, he also served on the New York State Highway Users Conference which was petitioning for better highways. In October 1941, the New York Trap Rock Corporation refinanced by releasing $3.5 million in bonds through Smith, Barney & Co. On November 29, 1948, the Department of Justice charged Foss with violating the
Sherman Antitrust Act as chairman of the New York Trap Rock Corporation. Also charged were his son, Wilson P. Foss III, who was president of the company, and the vice-president, J. C. Dooley. As part of the consent decree ruling, the company was prohibited from enlarging its holdings for two years and from interfering with their customers use of other vendors. == Personal ==