Pages 12 and 13 of the Queensway Mersey Tunnel souvenir album
Page 12: Liverpool; view of the ceremonial curtains covering the tunnel entrance being raised. Archive reference number 11256-10
Page 13: Liverpool; close up view of the royal stand. Archive reference number 11256-21. Zoom into the detail of this photograph and see if you can spot a mysterious figure above the crowds in the background.