Company of Proprietors of the Ellesmere Canal > Series of architectural drawings of Locks by William Jessop
"Plans of the Lower Gate Cill for the large locks on Ellesmere Canal"
Elevation and section. Annotated "W: Jessop 1794". Endorsed "Sills for Lower Lock Gates Ellesmere Canal" and "Large locks 14th [illegible] W Jessop 1794".