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 .

[484] and eliciting an amount of information that seemed wonderful for one man to accomplish. He made the acquaintance of commanding officers, and conversed unreservedly with them upon the various matters connected with their divisions, and their movements, present and perspective. He carefully examined the fortifications that had been erected, and the number of guns they contained. He talked with the private soldier and the civilian, and in fact, on his return to Richmond, was as well informed with regard to the military resources of the enemy as were the generals themselves. Rejoiced at his success, and carefully noting what he had witnessed, Webster prepared to return North.

Visiting the War Department and the office of the Provost-Marshal, he received from Mr. Benjamin and General Winder a large number of letters and several important commissions, which were to be delivered and attended to after he should arrive in Washington and Baltimore.

Leaving Richmond, he safely passed the pickets and outposts of both Federals and rebels, and reported to me. His trip had been a most important and successful one, and the information he brought was most invaluable. Webster seemed as well pleased at his success as were either General McClellan or myself, and after a short rest announced himself as quite prepared to make another journey to the South, whenever his services should be required.