The Forest Service and The Greatest Good: A Centennial History, by JAMES G. LEWIS . Durham, NC: Forest History Society, 2005; xvi + 286 pages; illustrations, appendices, endnotes; clothbound, $29.95.; The Greatest Good: A Forest Service Centennial Film, by STEVE DUNSKY , producer/director; DAVE STEINKE , producer/director; AARON SHAPIRO , Forest Service historian.