In 1930, he was appointed director of the newly opened Harvard Neurological Unit at Boston City Hospital. When Cobb moved to the Massachusetts General Hospital in 1934, he was succeeded by Tracey Putnam.
In 1930, Cobb took over as head of the newly established Harvard Neurological Unit at Boston City Hospital. When he moved to Massachusetts General Hospital in 1934, his position was taken over by Tracey Putnam.