He chaired the Mayo Foundation, and the board of regents at the University of Minnesota.
[2] Born in Rochester, Minnesota, Mayo graduated from Princeton University in 1921.
During World War II, Mayo served in the United States Army Medical Corps with the rank of colonel.
[5][6] Activated in January 1943, the 71st Army General Hospital personnel were commanded by Drs Charles W. Mayo and James T. Priestley II.
These hospitals provided the first treatment for casualties evacuated by air from the campaign against Japanese occupation in this area.