in Palm Beach, Chicago Club and the New York Athletic Club. Hanigan died of Alzheimer's disease on July 1, 1996, in West Palm Beach, Florida, at age 84. References 1910s births 1996 deaths American chairpersons of corporations American chief executives American corporate directors Deaths from dementia in Florida Deaths from Alzheimer's disease Fishburne Military School alumni Genesco people Martin Marietta people People from the Bronx People from North Palm Beach, Florida Stevens Institute of Technology alumni