Answer: Gannow, Leeds & Liverpool Canal. This is the one with the mason’s marks. John Gagg slide 394 of unknown date.
Correctly answered by: Adrian Stott, Alan Dodds, Cyril J Wood, George Bungle Eycott, Ian Cleathero, Jacqueline Wilson, Jennie Tomlinson, John Healey, Mel Tyerman, Mike Spick, Richard Amende, Roger Turner, Stephen Traynor, Sue O'Hare, Tony Clayton
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