EditorialDr. Kevin Cahill, who managed to pack several careers into a single life as a leading expert on tropical diseases, a doctor to celebrities and politicians, a close adviser to Gov. Hugh L. Carey of New York and a savior to the ailing American Irish Historical Society, at the organization’s headquarters on Fifth Avenue in Manhattan during the St. Patrick’s Day parade on March 17, 2011. (Michael Appleton/The New York Times)
EditorialMayor Michael Bloomberg, left, joins Dr. Kevin Cahill at the Fifth Avenue mansion of the American Irish Historical Society after marching in the St. Patrick's Day Parade on March 17, 2011, in New York. (Michael Appleton/The New York Times).