From the Richmond Examiner, 1/3/1866, p. 3, c. 4
FIRE AT CASTLE THUNDER – NO SERIOUS DAMAGE DONE – At about half past eleven o’clock last night, a fire broke out at Castle Thunder. One of the guards had had an unusually large fire, and it is supposed that the heat caused the ignition of an old flue, formerly used for warming the building. The flames spread rapidly, and the most disastrous consequences were feared. Company C was first on the spot, followed immediately by Company A. The hose were put on, the flames got under, and by midnight all danger was over. Some negroes were confined in a cell adjoining the flue which was on fire, and as they had removed one of the bars from the grating near the street, it is probable that they intended to make their escape in the confusion.