Book: An Explanation of the Works of the Tunnel under the Thames, now completed, from Rotherhithe to Wapping. 14th edition, London, 1846. 15ff. 8 maps/illustrations (one of which is an overlay). Paper cover. Thames Tunnel
One book by Heuschel "Sound and Light", 1828. (Reprinted from Encyclopaedia Britannica). One book by Heuschel "Sound and Light"