The History of the Several Towns, Manors, and Patents of the County of Westchester (1881 revised edition, Vol. I)
It was thus at the beginning of the Fall in 1779, that he commenced the virtual discharge of the Adjutant-gen eralcy in which he continued till his death." It was in March or April, 1779, that General Arnold, commanding at Philadelphia, had, under the feigned name of Gustavus, begun a secret correspondence with Clinton; who committed the matter to the hands of Andre. The latter wrote over the signature of John Anderson; and was replied to as " Mr. John Anderson, merchant, to the care of James Osborn, to be left at the Rev. Mr. Odea's, Ntw York." Though at the outset the English had no clue to their correspondent's identity, the character and value of his information soon led them to suspect it; and it is supposed by some, that this letter to Mr. Arnold was written with the view of making clear to her husband the character of its author, and to invite a return of confidence. This may possibly have been the case ; but all my investigations show that the lady had not any suspicion of the dealings between the parties, or was ever intrusted by either side with the least knowledge of what was going on. Equally false, in my judgment, is the charge that she tempted her husband to treason. Her purity and elevation of character, have not less weight in the contradiction of this aspersion, than the testimony of all chiefly concerned in the discovery and punishment of the crime. "After the fall of Charleston in 1780, we are told that there was an opinion current in the American line that Andre had been present within its line during the siege, as a spy." It is but just to add, that, if this story of Andre's having been a spy at Charleston, received credence in respectable quarters, it was afterwards