 The largest white oak in the United States when it died and was cut down , 9 @-@ 23 @-@ 1938 . Age was estimated to be 582 years . Height , 146 feet ; circumference , 30 feet , 9 inches ; diameter , 9 feet , 9 1 / 2 inches . Trunk contained 15 @,@ 000 feet B. M. lumber . 
