With Their Computed and Measured Distances, and the Distinction of Market and Post-towns. Also a Table for the Ready Finding Any Road, City, Or Market-town, and It's Distance from London: a Sheet-map of England, ... and an Exact Account of All the Fairs, ... By William Morgan, ... The Eleventh Edition, Corrected and Improved. To which is Added, a List of the Principal Trading Towns to which Letters are Sent ... from the Post-Office in London. ...