ALS, RPB. ADfS, DLC-RTL. Zacharie wrote Lincoln on September 21, 1864:
``Yours of the 19th came duly to hand. It has had the desiered effect, with the friends of the parties.
``I leave tomorrow for the interior of Pennsylvania. May go as far as Ohio. One thing is to be done. And that is for you to impress on the minds of your friends for them not to be so sure.'' (DLC-RTL). No satisfactory clues have been discovered to this cryptic letter.