GAGG, John. The Observer's Book of Canals. London: Frederick Warne & Co. Ltd., 1982.
12mo., printed boards, pp.192; upper edge with a few spots, toned as is common, and slightly sunned to spine; a very good copy.
First edition, dedicated to the Inland Waterways Association, "without whose efforts over the years many canals would, without doubt, be no longer usable".