Left: Excavation of Olive Mount. Engraving by Henry Pyall in Thomas Talbot Bury, Coloured Views on the Liverpool and Manchester Railway. London: Ackermann & Co., 1833. This image is in the public domain in the United States because its copyright has expired. Courtesy of Wikimedia Commons. Right: “Sketch of the Bridges and Excavation of Olive Mount,” 1832. Coloured lithograph drawn and engraved by William Smoult. Used with permission. Copyright (c) National Railway Museum / Science & Society Picture Library.