From the Richmond Examiner, 4/9/1863
DIVISION OF DETECTIVE FORCE. – A portion of the detective force stationed at Castle Thunder, Eastern District, has been detached therefrom, and ordered to report at the headquarters of the Provost Marshal of Richmond. Those detached are Messrs. Crow, Causey, and Shæffer; those that remain are Messrs. Perdue, Folks, New, and Thomas.