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Bradford
Doncaster
Grosmont
Halifax
Halifax St. George
Huddersfield
Hull
Leeds
Liverpool
Manchester
Nottingham
Rotherham
Sheffield Athenaeum
Sheffield Lyceum
Wakefield
Whitby Chess Club
York
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Hull Chess Assoc’n
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North Lincolnshire CA
North Yorks. & Durham CA
Northumberland & Durham CA
West Yorkshire Chess Assoc’n
Yorkshire Chess Association 1
Yorkshire Chess Association 2
Yorkshire Chess Association 3
Yorkshire County Chess Club
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Northern & Midland Counties CA
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British Chess Assoc’n
Chess Association
Counties Chess Assoc’n
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