TUNNEL UNDER THE THAMES]. A perspective view of the Thames and the Thames tunnel. History of the tunnel. [London]: Azulay, Thames tunnel, [circa 1850]. Paper peepshow consisting of 4 engraved, colored and openworked plates, glued to 201 x 168 mm cardboard and accordion-mounted, in a blue cloth-backed cardboard folder with printed label on the front cover. Rare paper peepshow featuring a color perspective view of the Thames and the double tunnel that was built beneath it from 1825 to 1843. This document was generally sold to visitors to the tunnel; it has become extremely rare today. It consists of 4 plates. The first depicts Queen Victoria's visit when the tunnel opened in 1843. It features 3 holes, one in the upper part allowing a view of the Thames, and two in the lower part, showing an in-depth view of the two tunnels. A printed presentation of the tunnel entitled "A brief account of the Thames Tunnel" has been glued to the front cover. Some wear to the folder, tears to the center fold inside.