After spending 42 years in the advertising and broadcasting industry, where he worked with such television icons as Groucho Marx, Johnny Carson, and Milton Berle -- and spent twelve years as censor for "Saturday Night Live" -- William Clotworthy retired and began to travel, to lecture, and to write. His particular interest became became finding, describing, and teaching about places that commemorate presidents of the United States. "Homes of the First Ladies" is Clotworthy's fourth book.