     
HISTORY
REVISORY SURVEY 1941--4 VISIBLE PILES; SCALED AT 1:15000 FROM CHART 14974     
 (NAD 1902) IN LAT 46-35-13.5W, LONG 90-54-06.0W. CENTRAL POSITION SCALED IN NAD 83.           
TP00439--(78-80) REVIEWED CLASS 1; NOT SHOWN, POSSIBLY DUE TO