Entitled "A Plan of the Duke of Bridgewater's Navigable Canal already made, with the Extention proposed from Longford Bridge to Liverpool".
Shows the course of the canal from Worsley [to. Eccles co. Lancs] to Longford Bridge [to. Stretford co. Lancs], and from Longford Bridge to Manchester, with the proposed extension to the Hempstones [to. Halton] near Runcorn; also "The Cource of the Old River" [rivers Irwell & Mersey]; locks are identified by key, and road crossings and settlements along the route of the canal are also indicated.