William Henry Leffingwell
William Henry Leffingwell (June 4, 1876 – December 19, 1934) was an American organizational theorist,[1] president of W. H. Leffingwell, Inc., New Jersey, management author, and the founder of National Office Management Association. Leffingwell was born in Oxford County, Ontario to Wendell Phillips and Mary Catherine (Edwards) Leffingwell, both Americans.[2] He was trained as a stenographer and “applied scientific management to