ACKERMANN, RUDOLPH. 1764-1834.
Autograph Letter Signed ("R. Ackermann"), 1 p with integral address leaf, 4to, London, November 14, 1820, to Jean-Baptiste-Balthazar Sauvan, mild toning and spotting, adhestive remnants to hinge, residue from early tape repair to upper right corner.
Sauvan is the author of Picturesque Tour of the Seine published by Ackermann in 1821. Here, Ackermann frets over Sauvan's delay in completing the work: "should it be still in your hands, please to send it off as speedily as possible, by the diligence, in the form of a packet. I trust that the continuation, for the second part, will follow before the conclusion of the present month."