In 1928, negotiations between the Mackay companies and the International Telephone and Telegraph Corp. resulted in a merger of the two interests. In the previous year the Mackay companies had acquired operating rights in the Federal Radio Ca, thus becoming the first communications service in the world to operate radio, cables and telegraph lines under one management.
In addition to being president and a director of the companies maki up the Mackay system, Mr. Mackay also was a director and member of the executive committee of the International Telephone and Telegraph Corp, and a director of the Guaranty Trust Ca. of New York.
Throughout his long business career Mr. Mackay was keenly inter sports and had more than 60 c trophies to his credit. He held squash championships and also was known as an expert rifle shot Racing also occupied his attention and for several years the Mackay colors were seen on all the leading eastern race tracks, On the death of his father Mr. Mackay retired f-om the turf and confined himself to breeding thoroughbreds,
Text read from the printed page and cleaned; old type leaves the occasional error.