An antique lithograph by Day & Son. Lithographers to the Queen. This is one of the 45 plates from "The Britannia and Conway Tubular Bridges by Edwin Clark Resident Engineer with the sanction and under the immediate supervision of Robert Stephenson. Published for the author, by John Weale, 59 High Holborn. 1850. Shows the Upper Cells and the Lower Cells, meant to strengthen the sections.
Approx 301cms by 50cms.
