The Old Showmen and the Old London Fairs - Thomas Frost - Bog

There can be no doubt that the practice of holding annual fairs for the sale of various descriptions of merchandise is of very great antiquity. The necessity of periodical gatherings at certain places for the interchange of the various products of industry must have been felt as soon as our ancestors became sufficiently advanced in civilisation to desire articles which were not produced in every locality, and for which, owing to the sparseness of the scattered population, there was not a demand in any single town that would furnish the producers with an adequate inducement to limit their business to one place.