D.H. Carmady Auger Detection New York, N.Y. Dash: Just a line to let you know how much I appreciated your help (reluctant though it was)... The snaps you took of the floor in Lutwidge's lab circa 1958 have taken me leaps and bounds forward in my "Journey." By the time I found the lab, it was a shambles - even the white tiles looked pitch black under layers of dust, muck and clutter... never guessed I was literally STANDING on the code. (And your surmises about the pattern were 100% correct - my associate Phil is a grandmaster and helped me crack it.)