[Maps (4) re canal system from River Severn to River Thames: /1 'Thames Navigation; with the Improvements as intended by the New Bill' (2 copies). Scale 1":2m. Bears detailed references; /2 'A Plan of the Thames and Severn Canal Navigation (Laid down from Actual Surveys;) by Robt. Whitworth Enginr. 1783'. Scale 1":1m. References detail canal from the Severn to Stroud and from Stroud to Lechlade. Engraved by Wm. Fader, Charing Cross; /3 'A Sketch of the Country to which the Abingdon, and the Thames & Severn Canals, will open a communication with the City of London'. Scale 1":c.10m.; /4 'A Plan of the intended Navigable Canal from Basingstoke to the River Wey. Surveyed by Joseph Parker'. Scale 1":c.9fur. Engraved by Wm. Faden, Charing Cross. 5 sheets. It is not clear whether they are by Robert Whitworth I or II but it is probably the former, 1734-1799]