Robison was a Director of American Shared Hospital Services, The Investment Company of America, American Mutual Fund and AMCAP (all of the American Funds Group) and served on the Council (Board) of the Royal Institute of International Affairs in London.
Robison was a director for several financial institutions within the American Funds Group, including American Shared Hospital Services, The Investment Company of America, American Mutual Fund, and AMCAP. He also held a position on the board of the Royal Institute of International Affairs in London.