War-dated ALS, one page, 5.25 x 7.5, May 15, 1862. Letter to an unidentified gentleman. In full: “I could not myself send a sealed letter across our lines, & certainly could not for another; nor could I feel justified in breaking a seal. Hence I must return it. Indeed, in the present condition of the War it would be difficult to send at all, & I know two months ago, Gen. Wool was refusing to send letters except to our prisoners South. He might oblige me, but it’s very uncertain. If the battle has not commenced at Corinth, that might be a quicker way of sending it, & easier to send it there across the lines. If you return it to me, you had better leave off the stamps & I will send the specie for the postage. It might prejudice Gen. Wool Asst. sending it.” In fine condition, with scattered light toning and adhesive remnants. Accompanied by a still-sealed empty hand-addressed free franked envelope, addressed by Colfax to “Hon Wm. S. Avery, Prisoner of War, Sandusky, Ohio,” and franked “Free Schuyler Colfax.” RRAuction COA.