Before revision: In Search of Excellence, Tom Peters and Robert H. Waterman, 1982, 2004 (360 pages), p.289, web: BooksG-FOC-289 .Historian Stephen B. Oates asserts With Malice Toward None: The Life of Abraham Lincoln'', Stephen B. Oates, 1977, 544 pages: that Abraham Lincoln invented the management style by informally inspecting the Union Army troops in the early part of the American Civil War
After revision: In Search of Excellence, Tom Peters and Robert H. Waterman, 1982, 2004 (360 pages), p.289, web: BooksG-FOC-289