Allan Pinkerton, The spy in the rebellion; being a true history of the spy system of the United States Army during the late rebellion, revealing many secrets of the war hitherto not made public, compiled from official reports prepared for President Lincoln , General McClellan and the Provost-Marshal-General .

[497] January, and when the information which Webster had gained would have been of vast importance and benefit to the cause of the Union, but which, lying an agonized invalid in a Richmond hotel, he was unable to communicate to those who were anxiously awaiting his return. And now, leaving Webster at Richmond, and with Price Lewis and John Scully on their way to the rebel capital, we will return to Washington, and watch the events which were transpiring at the capital.

Exchange of prisoners.