Colors credit provided by Anthony Tollin.
Letters and comments from Ed O'Toole, Sheldon W. Mills, R. John Unger, Al Schroeder, Beppe Sabatini, Dave Sikula and Scott Gibson.
Questions from David A. Lofvers, Chris Hruza, Mitch Durdle, Chuck Colvin, Tim Wiles, Bob Worley, Kurt Lindblom, John Ybarra, Richard Gall and Penny Jacobson.