Double pound lock on the Regent's Canal London showing the east end of the Islington Tunnel in the background Handcoloured engraving London c1839
{"Image ImageDescription": "Double pound lock on the Regent's Canal, London, showing the east end of the Islington Tunnel in the background. Hand-coloured engraving, London, c1839. (Photo by, Universal History Archive/Universal Images Group via Getty Images)"}