Over the years it has boasted an elite membership of politicians, diplomats, businessmen, and writers who have included Henry Kissinger, Margaret Thatcher, Caspar Weinberger, Douglas Fairbanks Jr., Henry Luce, Lord Carrington, Alexander Haig, Paul Volcker, Tom Kean and Walter Cronkite to mention a very few.
Society of Jesus | Royal Society | National Geographic Society | American Cancer Society | Royal Television Society | American Physical Society | American Chemical Society | International Society for Krishna Consciousness | American Society of Civil Engineers | Royal Society of Canada | Royal Geographical Society | American Philosophical Society | Theosophical Society | Royal Society of Edinburgh | Society of Antiquaries of London | Society of the Cincinnati | Society for the Prevention of Cruelty to Animals | Justice Society of America | American Mathematical Society | Royal Aeronautical Society | National Honor Society | Black Label Society | Students for a Democratic Society | society | Royal Society of Arts | secret society | Royal Dublin Society | Royal Astronomical Society | London Missionary Society | Zoological Society of London |
Brown belonged to many social clubs and hereditary organizations including the Pilgrims Society, the Society of the Cincinnati, the Military Order of the Loyal Legion of the United States, the Sons of the American Revolution (joined in 1960 as national member number 85,691), the Newport Reading Room, the Newport Country Club, the Spouting Rock Beach Association, the Fishers Island Club and the highly exclusive Clambake Club.