Here are some examples from the 1930s of insurance company officers and directors who were also on the board of directors of other insurance companies.
Mr. Morgan Brainard was the president and a director for both the Aetna Life Insurance Company and Aetna Casualty and Surety. At the same time Mr. Brainard was also on the board of directors of the Hartford Steam Boiler Insurance Company.
Mr. William Corson was the president and a director for the Hartford Steam Boiler Insurance Company. At the same time Mr. Corson was on the board of directors for Aetna Life and Aetna Casualty and Surety. Mr. Richard Bissell was the president and a director of the Hartford Accident and Indemnity Company and the Hartford Fire Insurance Company, and at the same time Mr. Bissell was on the board of directors for Aetna Life, Aetna Casualty and Surety, and the Connecticut General Life Insurance Company. Mr. Edward Milligan was the president and a director for the Phoenix Insurance Company and Mr. Milligan was a member of the board of directors for Aetna Life, Aetna Casualty and Surety, Hartford Steam Boiler and Connecticut Mutual Life.