OAK BROOK, Ill. -- Paul Butler -- founder of Butler Aviation, the nation's biggest general aviation firm, is dead at age 89, the victim of a car accident.
Butler was struck and killed late Wednesday, one day after his birthday, as he crossed a street near his suburban Chicago home.
The driver of the car -- a 27-year-old man -- suffered minor injuries.
Police said Butler was standing in the center of the street taking pictures near Salt Creek Bridge about 9 p.m. when the car hit him. The vehicle then swerved into the bridge.
Police said Thursday there had been no decision on whether charges would be filed.
Investigators said Butler suffered head and chest injuries and compound leg fractures and was taken to Hinsdale Sanitarium and Hospital, where he was pronounced dead on arrival.
Frank and Michael Butler, two of the millionaire's sons, rushed outside after the accident.
'He was in the habit of taking walks about the family estate whenever he felt in the mood to do so,' Butler's secretary, Ann Spurrier said.
'He was by no means retired. He kept a full schedule and never slowed down,' she said.
Just before the accident, Butler attended a Grounds and Greens meeting with the Board of Governors at Butler National Golf Club, since 1974 the home of the Western Open, which opens next week.
Butler was president of Butler Co., the oldest family-owned business in Illinois, Michael Butler said. The conglomerate was established by Butler's grandfather, Julius Butler, in 1841 and is involved in real estate, development, paper and aviation.
Butler was described by his neighbors as 'the father of Oak Brook' and 'a very kind person ... interested in people with problems. He began developing the exclusive western suburb -- what was once his 3,000 acre polo grounds and hunting fields -- in the 1950s. The suburb has no industry and depends on a massive shopping center for its tax base.
The Butler family's influence first made an impact in the paper industry. The First Continental Congress used Butler paper to print money.
Butler served as chairman of Butler Paper Co. between 1930 and 1965 and director of the Nekoosa-Edwards Paper Co. from 1960 to 1965.
He co-founded the Bank of Oak Brook and the Oak Brook Utility Co., and organized Oak Brook Venture, a development company.
Butler was married several times, and in addition to Frank and Michael is survived by another son, Norman, and a daughter, Marjorie Kent.
Butler relished the image of a ladies' man who liked elegant living. He spent his semi-retirement in Oak Brook, Palm Beach, Fla.; the Sun ranch in Montana and various cities in which Butler Co. has offices.
The millionaire -- whose wealth was estimated between $50 million and $125 million -- was fond of polo and was once ranked a four-goal player. He also was an avid tennis player and horseman.
Butler did not like to talk about his wealth.
'Anything that ever has been published in the papers about that has been greatly exaggerated,' he said in a recent interview. 'To tell you the truth, I don't know exactly what I'm worth.'
Funeral arrangements were incomplete.