12Piggott, Stuart. Ruins in a Landscape. Edinburgh: At the University Press, 1976. 124.
Piggott writes: "Coaches and carriages improved with new developments in technology especially in steel springs, and so did the road surfaces that made lighter and faster vehicles possible, and English coach-builders outstripped the Continent. The Tour in search of the Picturesque, inevitably including antiquities, could now become comfortable, popular and widespread. Tours were made, written up and published."