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American professional golfer Arnold Palmer (1929-2016) pictured in the forward seat of a vintage de Havilland DH 82 Tiger Moth biplane as it flies from Woodvale airfield in Southport over the golf course at Royal Birkdale Golf Club in England in July 1976. Arnold Palmer is about to compete in the 1976 Open Championship at Royal Birkdale Golf Club. (Photo by Brian Morgan/Popperfoto via Getty Images/Getty Images)

American professional golfer Arnold Palmer (1929-2016) pictured in the forward seat of a vintage de Havilland DH 82 Tiger Moth biplane as it flies from Woodvale airfield in Southport over the golf course at Royal Birkdale Golf Club in England in July 1976. Arnold Palmer is about to compete in the 1976 Open Championship at Royal Birkdale Golf Club. (Photo by Brian Morgan/Popperfoto via Getty Images/Getty Images)

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American professional golfer Arnold Palmer (1929-2016) pictured standing in front of a vintage de Havilland DH 82 Tiger Moth biplane at Woodvale airfield in Southport, England in July 1976. Arnold Palmer is about to compete in the 1976 Open Championship at Royal Birkdale Golf Club located near Southport. (Photo by Brian Morgan/Popperfoto via Getty Images/Getty Images)

American professional golfer Arnold Palmer (1929-2016) pictured standing in front of a vintage de Havilland DH 82 Tiger Moth biplane at Woodvale airfield in Southport, England in July 1976. Arnold Palmer is about to compete in the 1976 Open Championship at Royal Birkdale Golf Club located near Southport. (Photo by Brian Morgan/Popperfoto via Getty Images/Getty Images)

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Arnold Palmer peers out the window of his personal airplane around 1965 in Latrobe, Pennsylvania. (Photo by Transcendental Graphics/Getty Images)

Arnold Palmer peers out the window of his personal airplane around 1965 in Latrobe, Pennsylvania. (Photo by Transcendental Graphics/Getty Images)

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Arnold Palmer and his wife pose in front of their personal airplane around 1965 in Latrobe, Pennsylvania. (Photo by Transcendental Graphics/Getty Images)

Arnold Palmer and his wife pose in front of their personal airplane around 1965 in Latrobe, Pennsylvania. (Photo by Transcendental Graphics/Getty Images)