A possible source is W.H.Maxwell British Progress in municipal Engineering
(1904) and the section on roads in T.K.Derry and T.I.Williams History
ofTechnology. I only have theshort version a Short History of Technology
Oxford 1960 which has a few pages on roads this usually means that there
will be a reasonable account in whatever volume of the full history
includes the topic.
Tom Jackson Silloth Cumbria
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