Many of the cathedral 's most important artifacts , such as the ancient glass ( including the great east window ) , the misericords , the bishop 's throne , the Exeter Book , the ancient charters ( of King Athelstan and King Edward the Confessor ) and other precious documents from the library had been removed in anticipation of such an attack .
Fortunately many of the cathedral 's most important artifacts , such as the glass of the great east window , the misericords , the Exeter Book , the bishop 's throne and the Bronescombe Effigy , had been removed at the start of the war in anticipation of such an attack .