Lieut Gen Grant, Oct. 5th. 1864.
I enclose you copy of a correspondence  in regard to a contemplated exchange of Naval prisoners through your lines and not very distant from your Head Quarters. It only came to the knowledge of the War Department and of myself yesterday, and it gives us some uneasiness. I therefore send it to you with the statement that as the numbers to be exchanged under it are small, and so much has already been done to effect the exchange, I hope you may find it consistent to let it go forward under the general supervision of Gen Butler, and particularly in reference to the points he holds vital in exchanges. Still you are at liberty to arrest the whole operation, if in your judgment the public good requires it. Yours Truly A. LINCOLNPage 37