[1] His father ran one of New York's first big garages and Robertson grew up surrounded by Mors, Panhards and other cars.

Robertson raced a Christie, a Hotchkiss, and a Simplex, as well as a Locomobile with which he won the 1908 Vanderbilt Cup.

For the 1910 Vanderbilt Cup, Robertson was the captain of the Benz team but sustained arm injuries in a crash while showing a newspaper reporter the Long Island course and was forced to retire from driving.

Robertson was involved in the construction of Roosevelt Raceway and acted as its manager when the Westbury, Long Island circuit hosted the George Vanderbilt-sponsored Cup in 1936 and 1937.

[2] Robertson died in Beth Israel Hospital in New York City on July 3, 1955, aged 70.