I am researching Harry M Gardiner, s/o William M Gardiner and Lillian M Elliott. He was born 23 March 1883 in Shelby, Oceana, MI. He later became a manager at General Motors, and took up flying at age 50. In 1930 he lived at 1119 Buckingham Rd in Grosse Pointe Park, MI. What became of him after 1930? When did he die?