From the Richmond Sentinel, 5/25/1863, p. 2, c. 2
Shipped. – Six hundred and fifty-odd Yankee prisoners left the Libby prisoners left the Libby prison on Saturday morning for City Point. They were in charge of Lieut. La Touche. A Canadian, named Kirby, who for sometime has been confined in Castle Thunder, under the suspicion of being a spy, was sent off with them.