Leonard Patrick O’Connor Wibberley (1915-1983) was the Irish-born author of more than 100 books under his name and three pen names — Patrick O’Connor, Leonard Holton, and Christopher Webb — as well as numerous short stories, several published in the Post. His most famous work,The Mouse That Roared, originally appeared in 1954 as a six-part serial in The Saturday Evening Post under the title “The Day New York Was Invaded.”